Will semi AR-15 upper receiver work on M16A1 full auto lower receiver?

[elnica1]

I own a full auto M16A1 lower receiver.

Will this AR-15 upper receiver kit from Rock River Arms work with my M16A1 lower receiver?

 

[taliv]

the upper should be compatible, however the carrier is prob an "ar15" style and won't trip the auto sear. will work fine in semi-auto. you can buy an m16 or full-auto carrier though and should be good to go


however, there are much better choices. i wouldn't buy that, or anything with A.R.M.S. on it

 

[elnica1]

thanks for the info taliv!

would you mind pointing me to your choices for my full auto M16A1 lower?

 

[250-3000]

Check out this conversion, discovered it while researching the one I bought. Don't have a happy switch, so went with the CMMG. Someone should be along that can comment on the Ciener conversion.

http://www.22lrconversions.com/atch-pg.htm

 

[taliv]

http://www.bravocompanyusa.com/AR15-Upper-Receiver-Groups-s/1.htm

you'll be very happy with the performance of anything on that page. while a bit pricey, i REALLY like the knight's URX II rails (have the built-in folding front sight) and are very light-weight. The Daniel defense "Lite" rails are also quite nice.

those uppers are probably a few more $, but for a full-auto, that's prob not a big deal, and they are assembled better, use better barrels (those hammer forged barrels are quite nice), and better quad-rails. you would notice a big difference in weight and quality if you held them.

 

[tkcomer]

You need the M-16 bolt carrier to make that full auto. I'd give them a call and see if they had those in stock. Might be able to substitute the AR-15 carrier for the M-16.

 

[taliv]

oh, one more thing... make sure your "M16A1" lower has the right sized pins. If it's a colt, they may be non-standard. I can never keep which ones are and which ones aren't straight.