Does Alexander Arms make that anymore? I looked on their site and all they have is the standard firing pin.
ARs in sub zero temperatures
- Thread starter 232593
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They stopped offering it years ago. Not sure why. It was meant to reduce firing pin lock time/drag inside the bolt.
Yes, I was using Slip2000 EWL in extreme cold temps, but I don’t have exact numbers in front of me.
The only reason I was able to fly with that lubricant was because it wasn’t petroleum-based.
In all your time shooting comps in the freezing temps have you seen any triggers fail due to the environment conditions? Especially the Hammer? As I understand it metal can get brittle in extreme cold.
These were high-volume, multi-day shoot courses. I never saw a hammer or small part like that fail in ARs, though there was a Bushmaster 20” rifle that had the flange on the gas tube wear out, started short-stroking.
We did have a Cz75 slide stop shaft snap in half in a brutal winter pistol high volume course.
Glocks and M&Ps ran fine. I used a borrowed G17 in that course, zero issues.
We did a lot of malfunction drills with dummy cartridges placed in magazines or set-up in pistols as part of clearance drills.
Some of the guys were big on getting as many TDP parts as possible for their AR-15s, and keeping spares.
Finland does an additional pressure test procedure on any stressed parts, so bolts gets proof-load tested again and stamped with a Finnish proof mark. That’s the last thing AR-15 bolts need.
That's actually just the standard failure mode of a CZ pistol. Everyone that competes with one keeps a spare slide stop on hand.
Mine broke while a buddy was shooting my gun. He had 3-4 malfunctions in 20 rounds and I couldn't figure out what he was doing wrong with my gun.
Interesting. My limited experiences with CZ75s up to that point had all been positive. I love the way mass is managed with those pistols and the fit/feel. It was weird seeing the slide stop shaft just break in half. I figured it was the extreme cold that made the part brittle.
