Tag Archives: impact

Research

BUL trigger pull measurements from my own personal collection

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During a reddit thread discussion, I took the time to measure the trigger pull weights of various BUL pistols in my collection, which I felt like I should repost on the blog. All measurements were taken with a Wheeler trigger pull gauge, and they were repeatable across multiple pulls:

  • Bullesteros (9mm, gen1 with steel grip): 1.6lbs
  • SAS II TAC SC (9mm, 2021): 3.5lbs (PGW tuned)
  • SAS II TAC Commander (9mm, 2021): 3lbs (Atlas trigger installed, probably some trigger work by someone)
  • SAS II TAC 5 (9mm, 2022): 3lbs
  • SAS II TAC Government Carry (45 Auto, 2020 or 2021): 3.25lbs
  • M-5 Government (45 Auto, gen1): 4lbs
  • M-5 Ultra-X (45 Auto) #1: 3lbs (!)
  • M-5 Ultra-X (45 Auto) #2: 3lbs (!)
  • M-5 SC (9mm, gen1): 3.5lbs (PGW tuned)
  • M-5 Commander (45 Auto, gen1, full compensator): 2.6lbs
  • BUL Storm: SA: 4.5lbs; DA: > 8lbs
  • BUL Storm Compact: – SA: 4lbs; DA: > 8lbs
  • Cherokee (gen1): SA: 4.5lbs; DA: – > 8lbs
  • Cherokee Compact (gen2): SA: 6.1lbs; DA: – > 8lbs
  • BUL Impact (9mm): SA: 4.5lbs; DA: – > 8lbs

As you can see, the SAS II guns are uniformly pretty good. The M-5s vary a lot more due to what I assume is tinkering by their former owners and/or worn in parts. For what it’s worth, my personal favorite trigger is in the Ultra-X (short, light, smooth) followed by the TAC 5. The Bullesteros has a fantastic trigger that is way too light – I need more practice with it.

The Tanfoglio-derived pistols (Impact, Cherokee, Storm) have uniformly average triggers, with the Cherokee gen2 having an oddly bad single-action pull. I almost wrote that they all had bad triggers, but years of shooting the P320 X5 Legion, SAS II, and even tuned up revolvers have made me forget these pull weights are roughly on par with a factory CZ-75. The trigger pulls tended to be smooth, so they didn’t feel awful, but they were certainly heavier than I was used to.

The reality is that a (single action) trigger pull weight under 4lbs is fine for competition use, albeit I prefer something in the 2.5lb-3lb range when practical.

Deals, Research

BUL Impact Factory Mag Sleeve

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I had previously opined that BUL had never released the “official” factory mag sleeve for the BUL Impact. Apparently, this was not quite true, because a pair of 9mm BUL Impacts being auctioned off by Mach1Arsenal on Gunbroker have them:

bul impact factory extension.jpg

These appear to work like the 3D-printed ones that I’m using – slip over the top of a full size magazine and just slide them down. There’s no locking mechanism at the top of the heel of the sleeve, which I had theorized might be a way of keeping it permanently connected to the grip. Unlike in the official shots, this sleeve doesn’t seem to be pinned to the bottom of the magazine. It looks to me like these sleeves are what would have been the bottom of the Impact’s grip if it were full-size.

Research

The difference between BUL Impact and BUL M-5 Ultra magazines

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IMG_1274

One mystery that consistently driven me a bit crazy is the subject of whether BUL M-5 Ultra magazines are compatible with the BUL Impact, and vica versa. I finally have an answer. As you can see in the above picture, the difference between the two magazines is the follower. The Impact magazines (seen on the right) have a slightly different follower with a higher left hand side to push up the Impact’s slide stop. The M-5 magazines (on the left) have a “normal” profile follower without the raised edge. You can use either magazine type in either gun, but the M-5 magazines won’t actuate the slide stop on the Impact, and the Impact magazines will require more force to release the M-5’s slide on an empty magazine.

Given that proper Ultra-X magazines appear to be going for astronomical ($100+) prices these days, being able to use DDA mags should be very financially helpful to owners of the Charles Daly M-5 Ultra-X and the Kimber Ten II Ultra.