The tight fit seems to be one of the hallmarks of a Les Baer 1911. The slide-to-frame fit and bushing fit are about right, IMO, but the best I can tell, most of what accounts for the bank vault lock up (at least on mine) is the result of a long barrel link, which exerts excessive upward pressure on the barrel lugs when the slide is in full battery. If I had to guess, I'd say that this allows for an accurrate pistol without the extra expense incurred by hard fitting the barrel to the slide, which would add several hundred dollars in labor to the cost of the guns, as well as slow down production significantly. My TRS has proven to be very reliable despite the tight lock up, and ever hundred rounds or so seems to get just a little slicker in its operation. IMO, Baer is still the best thing going in an over-the-counter 1911.