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Old November 19, 2012, 10:57 AM   #14
Fishbed77
Senior Member
 
Join Date: November 23, 2010
Posts: 2,808
Quote:
Is there an accuracy/reliability difference between the Complete AR.22 (like the S&W) vs the CMMG upper?
In my experience, the CMMG uppers are very reliable with a wide variety of .22LR ammo. Here is a link to my experience with my CMMG WASP upper:

http://www.thehighroad.org/showthrea...ight=cmmg+wasp

I can't comment on the S&W M&P15-22, as I don't have extensive experience with them, but the concensus is that they are quite reliable as well.

I believe either option is a good choice, but as mentioned above, I prefer the parts interchangeability, feel, and construction of the CMMG offering over the S&W. I lilke the fact that the CMMG is a real AR-15 (chambered in .22LR), as opposed to the plastic proprietary construction of the S&W. I can confirm that the CMMG uppers are very accurate out-of-the box.

Quote:
The CMMG upper didn't used to actuate the bolt hold open. You had to get an add on kit and use special magazines.

I don't know if that is still the case or not.
The CMMG upper will hold the bolt open, but only if you install a Bolt Hold-Open Adapter (BHOA) in the lower (it's a drop-in piece). You will need to use either CMMG magazines or the Black Dog magazines (my preference) with hold-open compatible followers.

Last edited by Fishbed77; November 19, 2012 at 11:02 AM.
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