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Girsan MCP35 PI - My Observations

8555 Views 120 Replies 21 Participants Last post by  TNorris
I picked up a Girsan MCP35-PI from my FFL yesterday afternoon. It cost $540 from a no-auction sale on Gun Broker... after Illinois Sales Tax, Shipping and my FFL fee it totaled $662.40. I am happy.


My intention is, and has always been, to harvest the PI short slide and mate it with a spare BHP Alloy Frame. Last night I shipped it off to BHSS along with the FN Alloy Frame host pistol... there was no need test fire before shipping as she will be vastly improved, one way or another. I did take a quick look and weighed some parts to determine suitability for this this project. Some notes below are things I am looking at for a better hybrid carry gun.


TRIGGER -
The mag disconnect is in place and it is pretty rough, but not too heavy. The BHSS trigger with magazine eject spring will replace the stock trigger. The supplied magazine did not drop free.

  • Ten pull average: 7# 3oz
  • High: 8# 1.2oz
  • Low: 6# 9.7oz

SLIDE -
The slide is indeed as sexy as a BHP should be... the FM Detective Slide is not and this has always bothered me for no good reason other than a foolish sense of aesthetics. It just doesn't look right.

The complete PI slide is about 27 grams lighter than the FM Detective. Losing yet another ounce in carry weight is nice. Below I am comparing PI slide weights to the FM Detective Slide weight ( fitted with a BHSS barrel and night sights).


  • COMPLETE SLIDE: 387grams (vs 409grams/FM)
  • RECOIL SPRING & GUIDE ROD: 21grams (vs 18grams/FM)
  • BARREL: 81grams (vs 81 grams/BHSS-FM)
  • SLIDE: 284 grams (vs 311 grams/FM)

This slide features the MKlll type 2 (paddle style) Sear Lever. Mine is silver on the paddle... not sure why it is not blued or even if it is identical to the FN part. I hope Girsan has kept things like these standard to the BHP platform.


RECOIL SPRING & GUIDE ROD -
These parts are not identical to the FM Detective parts, much to my dismay. The Guide Rod is shorter by an unmeasured 1/8 inch or so. The recoil spring is a longer slightly stiffer flat wire single spring rather than the clever dual spring arrangement which FM employed.

With the FM Guide Rod and Spring assembly in place in the Girsan PI slide, I cannot lock the slide back for disassembly due the extra length of the FM Guide Rod.

The Guide Rod is of a design similar to the new BHSS design... open ended where it contacts the slide rather than the standard closed circle. If you have ever played with the FM Detective Slide you know how it is difficult to remove and install the Guide Rod/Spring Assembly. On the Girsan PI, it was even more difficult to remove or install this assembly. In addition... removing the Recoil Spring from the Guide Rod was so difficult that I could not do it. I moved on.


GIRSAN PI SLIDE FIT to FN BHP ALLOY FRAME -
The complete Girsan PI slide seems to fit on all three Alloy Frame FM pistols I have. I could not dry fire on the BHP Alloy Frame which is mated to the FM Detective Slide. It did dry fire just fine on the other two other BHP Alloy Frames. It slides back and forth cocking the hammer very nicely on all three frames... I really think it fits.


Overall it is a good looking pistol with usable sights similar to the Tisas or SA-35. Mine will get a full upgrade to SFS, BHSS trigger and more so I am not concerned with the standard slide release, trigger pull, etc. I think this will make for a sexy looking light-weight short-slide BHP carry pistol. Worse case... she will be all Girsan but upgraded with BHSS parts, the way I like my BHPs to be.

Last note:
She comes in a functional blue plastic case with one 15 round MecGar magazine, a wire bore brush, Instruction Manual and a cable lock. My only picture thus far is displayed below. I will add to this when she returns from BHSS.

I have been waiting for quite some time to find another "Detective" sized slide!



Cheers,

Tim

@ rellascout - thanks for the availability tip!


Blue Air gun Trigger Gun barrel Gun accessory
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It's goofy and will end up affecting their bottomline.. You get a COMPACT version of a HP - and then you wanna' give it a ducktail AND a rail? *** is the point? Oh, wait - let's also slap an OPTIC on it.

None of this screams "concealable" to me at all.
Look at Boge's post. It shows an optic mounted on it. Fugly, I personally do NOT like optics on handguns. I'm not CCW, so "concealable" is not an issue for me personally.
Rail.. sad, just bloody sad.
Yeah, NOT a fan of a rail on a classic clone. That's why I love my Match that does not have a rail, hate the OPS version
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… and that beaver tail. Yikes.


Cheers,

Tim
For me personally, I like the beavertail. Hate slidebite, prefer that extended "ducktail" over a band-aid. Again, I'm not concealing so the tail doesn't bother me. However, the rail could use a good bench grinder session.
2
I spent a little time mixing and matching Hi Powers and some clones to the new Girsan MC P35 PI slide. For the most part, the slide fits onto most frames without issue. In addition to placing the PI slide on various frames, including some customs, I also ran snap caps through them to see if it cycled. Again, for the most part, all good. I did have a few frames where either the fit between the slide grooves and the frame rails was very tight and the slide would not go on all of the way. Probably a little cleaning/sanding/light filing of the grooves of the slide would fix the issue. I also had a couple of instances where the PI slide would go on, but would not cycle back more than about a 1/2 to 1 inch or so. So tolerances on the PI slide to frames can be tight.

The slide fit on my Springfield SA-35, but the slide would not cycle all of the way back, same for a 1990 Don Williams custom. The slide was making contact with something. A couple of LWs were also too tight to fit the rails, but on another LW it fit and cycled. Also had issues with a 1976 BAC sport. Slide fit, but it would not properly cycle the snap caps. Possibly with some fine tuning it would work.

I tried on one FEG, would not fit, on a Charles Daly it did.

With that, I had the PI slide on the following, all cycling with snap caps.
  • 1979 FN Alloy
  • 1964 FN Pre T
  • 1977 BAC Vigilante
  • 2004 Practical
  • 2016 BAC epoxy
  • 2016 Nighthawk custom
  • Charles Daly
To me the news is pretty good if you wish to place a PI slide on an FN/BAC frame. In most instances the PI slide fits and cycles. Where it does not, probably a little work on the slide tolerances should solve most problems.

Of course the ultimate test will be some time on the range.

PI slide on 1979 alloy, which is an optimal carry combination. Looks pretty good!


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A few additional images of the PI slide on various frames.

2004 Practical MKIII




2016 Browning




Charles Daly




1964 FN Pre T




Nighthawk Custom


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nice pics, ToddSig!
Picked up mine yesterday. The trigger is fairly gritty. I’ll shoot it some later today. I gave it a new pair of shoes I had laying around. Does anyone know if the front sight dovetail is something standard? I would like to get a FO front sight. Now I guess I need to track down an alloy frame
Air gun Trigger Gun barrel Gun accessory Wood
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I spent a little time mixing and matching Hi Powers and some clones to the new Girsan MC P35 PI slide. For the most part, the slide fits onto most frames without issue. In addition to placing the PI slide on various frames, including some customs, I also ran snap caps through them to see if it cycled. Again, for the most part, all good. I did have a few frames where either the fit between the slide grooves and the frame rails was very tight and the slide would not go on all of the way. Probably a little cleaning/sanding/light filing of the grooves of the slide would fix the issue. I also had a couple of instances where the PI slide would go on, but would not cycle back more than about a 1/2 to 1 inch or so. So tolerances on the PI slide to frames can be tight . . .
Thanks for the data, Todd. My PI is waiting for me to pick it up at my LGS. I have some alloy frame projects that have been waiting in the queue for the new PI slide. I really like it on your chromed alloy 1979 frame. I am thinking the same treatment but with my normal upgrades before I send it to Bob Cogan. Please let us know how it shoots.

For me, I am only buying the slide for my alloy BHP projects. Will just sell frame standalone for whatever I can recoup from it.

Scott
nice pics, ToddSig!
Picked up mine yesterday. The trigger is fairly gritty. I’ll shoot it some later today. I gave it a new pair of shoes I had laying around. Does anyone know if the front sight dovetail is something standard? I would like to get a FO front sight. Now I guess I need to track down an alloy frame...
I'd imagine that like their regular one it too takes a Mk III size front sight. Always measure of course to be sure. However, note that a shorter barrel = shorter sight radius and different FS height.
I am concerned that the PI slide with it's single flat wire recoil spring is not going to interact well with the rounded cam found in most Alloy framed BHPs. I personally think too many people are jumping the gun so to speak on this one. No one knows if it will actually work and work reliably. I know that Ted Yost won't build with a FM because can cannot get them to function at the level he demands from his builds.

Don Williams has done them with FM slides/barrels and FN frames. People have to remember that there are variances in the frames from one BHP to the next even within the same generation. If you are looking at an alloy to match with your PI you are rolling the dice. It is one thing if you are already in possession of the alloy frame to see it it function is another to get a $700-$1000 base gun only to find out it won't run.

I also personally would just just any smith to do this work. Some people are true gunsmiths and others are just parts swappers. YMMV
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Well-hell, we been trying to get BHSS to provide/install/replace the cam/bar anyway - put 'em to work! ;-)
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Well-hell, we been trying to get BHSS to provide/install/replace the cam/bar anyway - put 'em to work! ;-)
That is IMHO above their pay grade. It is IIRC welded in. The are not a machine shop. They do not do ANY metal work in house how would they install it?
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That is IMHO above their pay grade. It is IIRC welded in. The are not a machine shop. They do not do ANY metal work in house how would they install it?
I recall reading it was a press-in/mash-in/polish up real nice kinda deal. I did not get the impression it was welded. Definitely a specialty operation that not just any otherwise qualified "gunsmith" should attempt. I don't think it's really a machine shop kinda thing, either.

Cheers,
Tim
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If it's the same widget I am thinking of - the oval-shaped bar barely visible to the sides of frame - I heard that they were a press-fit, but that BHSS had no stock of them or a press to remove them if they did.
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I recall reading it was a press-in/mash-in/polish up real nice kinda deal. I did not get the impression it was welded. Definitely a specialty operation that not just any otherwise qualified "gunsmith" should attempt. I don't think it's really a machine shop kinda thing, either.

Cheers,
Tim
If it's the same widget I am thinking of - the oval-shaped bar barely visible to the sides of frame - I heard that they were a press-fit, but that BHSS had no stock of them or a press to remove them if they did.
This maybe true I have not had to replace one but IMHO either way well above BHSS pay grade. No one does it because the cost and the results do not justify it.
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Here are the instructions (brief and a bit dated) from the Browning 9mm Field Guide. I agree with rellascout, not worth the cost involved for a repaired frame. I would always question its reliability and when would it break or move again. Cylinder and Slide used to do it, when they were operating there was a long wait and expensive from what I recall. Better to just buy another frame or complete surplus pistol.

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I am concerned that the PI slide with it's single flat wire recoil spring is not going to interact well with the rounded cam found in most Alloy framed BHPs. I personally think too many people are jumping the gun so to speak on this one. No one knows if it will actually work and work reliably. I know that Ted Yost won't build with a FM because can cannot get them to function at the level he demands from his builds.

Don Williams has done them with FM slides/barrels and FN frames. People have to remember that there are variances in the frames from one BHP to the next even within the same generation. If you are looking at an alloy to match with your PI you are rolling the dice. It is one thing if you are already in possession of the alloy frame to see it it function is another to get a $700-$1000 base gun only to find out it won't run.

I also personally would just just any smith to do this work. Some people are true gunsmiths and others are just parts swappers. YMMV
Some excellent points by rellascout. I went back a took a look at how the PI slide fit onto my FN alloy frames. Like before with cast and forged frames, most seemed to work (not all), but this is not under firing conditions. Only a test to see if they fit and hand cycled. I have 5 alloys in my Hi Power collection.

Fitting the PI slide to an FN alloy frame.
  • 79 Hard Chrome, fits and cycles without issue
  • 84 old epoxy finish, very tight slide to frame fit, perhaps some use would loosen it up. But not sure on an alloy that is the best way to solve the problem (no bubbas)
  • 80 old epoxy finish, fits but will not rack back, too tight
  • 80 Cerakote finish, fits but tight, could be the cerakote application being a bit heavy in places
  • 75 with KB Gunkote finish, works fine
For placing the PI slide on an alloy FN frame, best to be prepared to have a little work done to make it fit and cycle properly. An HP experienced gunsmith would be the best option.

In most instances the PI slide does fit, but perhaps it may be best to categorize it as a semi drop in slide which may need professional fitting and not as a drop in part.

Re the single flat wire spring and how it interacts with the alloy frame, only range time and testing will tell on longevity and proper function. Can't really comment on that from my fitting comparisons.
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Some excellent points by rellascout. I went back a took a look at how the PI slide fit onto my FN alloy frames. Like before with cast and forged frames, most seemed to work (not all), but this is not under firing conditions. Only a test to see if they fit and hand cycled. I have 5 alloys in my Hi Power collection.

Fitting the PI slide to an FN alloy frame.
  • 79 Hard Chrome, fits and cycles without issue
  • 84 old epoxy finish, very tight slide to frame fit, perhaps some use would loosen it up. But not sure on an alloy that is the best way to solve the problem (no bubbas)
  • 80 old epoxy finish, fits but will not rack back, too tight
  • 80 Cerakote finish, fits but tight, could be the cerakote application being a bit heavy in places
  • 75 with KB Gunkote finish, works fine
For placing the PI slide on an alloy FN frame, best to be prepared to have a little work done to make it fit and cycle properly. An HP experienced gunsmith would be the best option.

In most instances the PI slide does fit, but perhaps it may be best to categorize it as a semi drop in slide which may need professional fitting and not as a drop in part.

Re the single flat wire spring and how it interacts with the alloy frame, only range time and testing will tell on longevity and proper function. Can't really comment on that from my fitting comparisons.
I am in no way saying it won’t work but that one should proceed with caution.
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I have built alloy frame Detective guns with both round cam and with the standard oval (75c series surplus guns). I have yet to have an issue with the cam in either scenario. My current EDC is an alloy Detective with the BHSS barrel (square cam notch) while the frame has the round cam. It has 2000+ rounds through it without any hiccups.

The biggest issue with the FM detective slide is NOT the cam style or fitting it to the slide. This is straightforward adjustment. The pertinent issue with the FM piece is the peening of the locking lugs in the slide. I have damaged 4 slides over the years to the point that I just stripped them for parts and then threw them out. I asked multiple gunsmiths and machinists if they could be repaired and all of them declined to even try.

As rellascout has pointed out, these later FM pieces, which were created after the relationship with FN went to the wayside, are just not the same quality. So I am very careful to run only standard pressure commercial ammo and I change the springs every 500 rounds. Probably overkill I know but springs are cheap.

So, very long winded comments aside, I am hopeful that the PI slide is of better quality. I have a 1/2 dozen alloy frame projects of different series waiting to try it out. If in the end it is a bust, I will just sell it.
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Some excellent points by rellascout. I went back a took a look at how the PI slide fit onto my FN alloy frames. Like before with cast and forged frames, most seemed to work (not all), but this is not under firing conditions. Only a test to see if they fit and hand cycled. I have 5 alloys in my Hi Power collection.

Fitting the PI slide to an FN alloy frame.
  • 79 Hard Chrome, fits and cycles without issue
  • 84 old epoxy finish, very tight slide to frame fit, perhaps some use would loosen it up. But not sure on an alloy that is the best way to solve the problem (no bubbas)
  • 80 old epoxy finish, fits but will not rack back, too tight
  • 80 Cerakote finish, fits but tight, could be the cerakote application being a bit heavy in places
  • 75 with KB Gunkote finish, works fine
For placing the PI slide on an alloy FN frame, best to be prepared to have a little work done to make it fit and cycle properly. An HP experienced gunsmith would be the best option.

In most instances the PI slide does fit, but perhaps it may be best to categorize it as a semi drop in slide which may need professional fitting and not as a drop in part.

Re the single flat wire spring and how it interacts with the alloy frame, only range time and testing will tell on longevity and proper function. Can't really comment on that from my fitting comparisons.
I have built alloy frame Detective guns with both round cam and with the standard oval (75c series surplus guns). I have yet to have an issue with the cam in either scenario. My current EDC is an alloy Detective with the BHSS barrel (square cam notch) while the frame has the round cam. It has 2000+ rounds through it without any hiccups.

The biggest issue with the FM detective slide is NOT the cam style or fitting it to the slide. This is straightforward adjustment. The pertinent issue with the FM piece is the peening of the locking lugs in the slide. I have damaged 4 slides over the years to the point that I just stripped them for parts and then threw them out. I asked multiple gunsmiths and machinists if they could be repaired and all of them declined to even try.

As rellascout has pointed out, these later FM pieces, which were created after the relationship with FN went to the wayside, are just not the same quality. So I am very careful to run only standard pressure commercial ammo and I change the springs every 500 rounds. Probably overkill I know but springs are cheap.

So, very long winded comments aside, I am hopeful that the PI slide is of better quality. I have a 1/2 dozen alloy frame projects of different series waiting to try it out. If in the end it is a bust, I will just sell it.
Great insight guys! Let me clarify my comments. Both of you are experience BHP owners and shooters. My words were not really directed at you as much as those with less experience on the platform and those who might not have built a custom gun before. These are not Glocks or ARs which allow for drop in parts. In some ways they are less standardized than Colt 1911s. When you move into the world of clones you it become even more of a minefield.

@goodag91 I remember hearing about soft slides from FM. I have talk to a lot of smiths about the LW BHPs and all them who have done them will say the cams "work" but at the same time won't guarantee deformation. I am glad to hear you have over 2000 rounds through a detective alloy setup. I almost did one several times but never went forward. I don't mind the extra length of the fullsized alloy which is my main BHP carry gun.

Please everyone who is moving forward with one of the projects keep us updated!
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I picked mine up today. Here are my initial thoughts.

Overall the machining looks good. Finish is decent and clean like other Girsan MCP35s I have seen. Internally in areas like the underside of the slide are typical of Eastern European guns. They did not waste a lot of time making it look pretty in there. Reminds me of CZ. It does not effect function so no need to polish it out.

The recoil spring is super heavy. So heavy it is hard to compress it enough to get it to clear the locking surface on the barrel. The fact it has to line up with the hole in the front of the slide makes the process even more cumbersome. My recoil spring came off the guide rod easily like and other.

The trigger is just under 8lbs of grit. The mag disconnect is the major source of the grit IMHO. You feel it engage. It almost feels like the trigger is rubbing on the sides of the frame but it isn't because when I take the mag out the trigger moves freely and is not rubbing on the sides. All of the grit seems to be from the mag disconnect contacting the mag. I think it is a result of the cerakote type finish which is on the part. This should be easily correctable by removing mag disconnect or polishing the surface of the paddle. I will most likely opt for the first.

The slide fit on and dry fired on my 1979 but would not go out to my 1986. The fit on the 1979 was tighter than it should be IMHO. I am not sure I would want to risk the frame with live fire on that frame without a known BHP smith looking at it. I did not try it on any of my steel frames as see no need to go that route. If I wanted to use it with the steel frame I would run it on the frame it came with.

I think that it could make a nice carry gun as it sits. I personally am not looking build an alloy commander with this barrel and slide combo until there is more data. For the price I think it is a good gun. I am not sure when I am going to be able to get to the range. Maybe later in the week to test fire it. I will update when I do.
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