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Which barrel for OPS 3rd 223?
12/9/2011 9:36:31 PM
Hey guys,
I some how ended up with a .223 3rd that needs a home and decided to put in an AR instead of a bolt gun. What do I need to do to make it work? I'm trying to build up a dedicated rifle to go with a 740 raptor and this thing will be suppressed 100% of the time.
I some how ended up with a .223 3rd that needs a home and decided to put in an AR instead of a bolt gun. What do I need to do to make it work? I'm trying to build up a dedicated rifle to go with a 740 raptor and this thing will be suppressed 100% of the time.
12/9/2011 10:55:07 PM
The mounting for a 3rd looks like this. So you will want to start with a bull barrel and have it contoured for the 3rd and threaded 11/16 x 24. 
12/9/2011 10:56:01 PM
the one i have is threaded 1/2x28 if that makes a difference, could I use a collar for the shoulder or does it need to have contact all the way back?
12/9/2011 11:00:03 PM
Oops, missed .223 cause i just answered a 30 cal question, sorry.
The .223 3rd does use 1/2 x 28 threads, and yes, a collar can be used.
The .223 3rd does use 1/2 x 28 threads, and yes, a collar can be used.
12/9/2011 11:03:11 PM
Originally Posted By PropDoc:
Oops, missed .223 cause i just answered a 30 cal question, sorry.
The .223 3rd does use 1/2 x 28 threads, and yes, a collar can be used.
Oops, missed .223 cause i just answered a 30 cal question, sorry.
The .223 3rd does use 1/2 x 28 threads, and yes, a collar can be used.
i appreciate the help... I have a 30 cal 3rd as well
forgot to ask... how much for a collar and to make it work since I won't need a muzzle device?
Thanks again
12/10/2011 11:13:25 AM
Well, the collar runs $20. However, i don't know of any barrels that are set to take a 3rd collar, so you would need a Contour fwd of Gas Block ($65), to put a step in for the collar to stop on.
