Otto said:
No, my Sigs don't have anywhere near the barrel slop as the CZ's do and I own 8 Sig pistols. Fact is, if there is any barrel wiggle at the muzzle, accuracy is compromised.
CZ Custom in AZ is beginning to address this issue. But their bushings looks like crap.
I presently own several SIGs and have had many CZs, still have an 85 Combat and custom AT-84s. I have never really noticed (nor heard others complain about) barrel or lockup slop (i.e., an ability to move the barrel around when the slide was fully closed/in battery) in any of the CZ models. I have heard complaints about the 97B plastic bushing. I had one, and the bushing wasn't tight -- in fact, the manuall said "don't make it tight", but the gun still shot well. (The plastic was offputting for many folks; I don't know if this is still a characteristic of the new 97Bs...)
I've never noticed a great difference in accuracy, either, between my SIGs and my CZs. (Several of my Glocks are equally accurate, and they don't have removable bushings. In competition, some of my best scores were done using a Glock 34... Go figure.)
The SIG lockup design is slightly different than the design used in the basic traditional the CZ-75B-based guns. With the 75-based design, the barrel, slide and frame are designed to lockup at the rear and a bushing would offer little benefit.
Exceptions are the 40B, the 97B and maybe the new P-07/P-09, which are more SIG-like in their lockup design.
Many guns have bushings, but they just aren't removable: the BHP and CZ-75 have separate bushing pressed into the slide; they aren't easily removed -- as there's no reason to do so. With many (most?) of the guns that have removable bushings, they're removable for a reason: you can't field strip them, otherwise.
I wouldn't be surprised if the Custom Shop's work on bushings is for guns with the newer lockup design. (That said, the 40B used a SIG-like lockup design, but didn't require a removable bushing.)
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