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1/25/2018 7:38:29 AM
Posted: 1/8/2006 11:18:22 AM EST
[Last Edit: 1/8/2006 12:04:06 PM EST by SayUncle]
what's the thread on the RRA/Colt 9mm barrels?
Link Posted: 1/8/2006 12:13:58 PM EST
click here

Muzzle Threading:

Muzzle is threaded 1/2x36 threads per inch on 9mm barrels (at RRA/Colt factory) as opposed to the 1/2x28 tpi use on 5.56

Olympic will thread 9mm only in 5/8x24 by default or 1/2x28 when asked. Other pistol caliber barrels are threaded 5/8x24. (Per Mark Budam at Triple Break Products)

Barrel Sizes:

9mm postban RRA barrels measure .718" diameter at muzzle, .750" at front sight, and .675" under handguard.
Link Posted: 1/8/2006 12:30:40 PM EST
Thanks, man.
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