How to determine if a barrel chamber is a type .125 or .136?
#5
If it's the AA heavy fluted light weight 16 inch barrel that they stopped making. It will use a grendel bolt with .136 bolt face and has the sammi grendel chamber as designed by bill alexander.

I have several of them. Great barrels, I stocked up on them before they stopped making them.
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How to determine if a barrel chamber is a type .125 or .136? - by A5BLASTER - 01-21-2021, 03:51 AM

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