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the judge
03-03-12, 12:16
Just want to confirm the thread on my Colt SP1 20" barrel...is it 1/2 28 TPI??

I want to add a BCE comp on it. Yes....I know it is a vintage AR. BUT, it currently is my go to gun that I am in the final stages of doing some very minor, easily returned to original mods.

Marty916
03-04-12, 00:34
It is 1/2-28.

the judge
03-06-12, 19:58
It is 1/2-28.

LOL! Thanks!! I guess that is good news, I can add a BCE comp after all!:D