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Thread pitch on AR’s chambered in 9mm? Login/Join 
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Wanted to ask if all AR’s chambered in 9mm have a standard thread pitch since most come with a flash hider....Thanks...Mark
 
Posts: 2225 | Location: MS | Registered: December 16, 2004Reply With QuoteReport This Post
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Picture of dusty3030
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Colt is 1/2 x 36. Some follow that, I've read some don't.


Straight shootin!
dusty
 
Posts: 3423 | Location: Memphis, mf'n, TN | Registered: August 13, 2005Reply With QuoteReport This Post
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They can be found in 1/2-36 or 1/2-28, the latter is becoming more common for suppressor compatibility.

Mine is 1/2-28
 
Posts: 1918 | Location: Atlanta, GA / Mountain City, TN | Registered: February 24, 2010Reply With QuoteReport This Post
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Thanks guys. My lower that is on order is a PSA lower with plans to match it up to a PSA upper. I will try and call PSA on Monday to ask which pitch they use on the upper I am looking at....Mark

This message has been edited. Last edited by: sigarmsp226,
 
Posts: 2225 | Location: MS | Registered: December 16, 2004Reply With QuoteReport This Post
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A quick peek of a couple 9mm uppers on PSA show 1/2-36 as the thread pitch.


--------------------------------------
Life can only be understood backwards; but it must be lived forwards.
Soren Kierkegaard
 
Posts: 19353 | Registered: September 06, 2003Reply With QuoteReport This Post
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Black92 - Thanks Sir...I should have looked at others uppers on their site before asking here....The one I was looking at did not specify and never thought to look at other units...Thanks Again...Mark
 
Posts: 2225 | Location: MS | Registered: December 16, 2004Reply With QuoteReport This Post
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