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5/21/2026 9:28:44 PM EDT
I know the GMR 308 SS specifically needs a BCG with a 2.2" tail so it doesn't damage the trip.

This leads me to believe a BCG with a 2.4" tail might trip an Arizona Regulator since my 2.2" BCG is just a little too short. Everything else appears to be fine with the "no disconnector" type setup and a speed hammer.

Does anybody know which brands of 308 BCG have a 2.4" tail?
5/21/2026 9:49:27 PM EDT
[#1]
For SS, you’d want the PSA 308 BCG.
I'm here to kick ass and chew bubblegum and I'm all out of bubblegum
5/21/2026 9:51:59 PM EDT
[#2]
Attached File


TOP: Battlehawk Armory
BOTTOM: Palmetto State Armory

I'm here to kick ass and chew bubblegum and I'm all out of bubblegum
5/21/2026 9:54:02 PM EDT
[Last Edit: AmateurLuthier][Edited] [#3]
Quote History
Originally Posted By ParaBellum123:
For SS, you’d want the PSA 308 BCG.
View Quote


I have the PSA 308 BCG. It is too short to trip an Arizona Regulator.

Edit: Thanks for the photo. A Battlehawk might work.
5/22/2026 4:24:12 PM EDT
[Last Edit: AmateurLuthier][Edited] [#4]
Question - could you measure the Battlehawk from the rear of the BCG to the trip surface? Want to make sure it isn't too long before I order one.

Edit: Nevermind, I'm betting it's a 2.5" tail. I just measured the BCG from my first .308 build, and it is 2.5". I wonder how difficult it would be to shave 1/10" off a carrier?
8/30/2026 12:21:29 AM EDT
[#5]
Did you ever get yours up and running OP?
If a 147 grn 9mm at 1000 FPS is the hammer of Thor then a 165 grn. 40 at 1200 fps must a lightening bolt from Zeus!

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