AR-15 Upper Receiver Assembly Tips Presented by Larry Potterfield of MidwayUSA

Building a standard AR-15 A2 Upper Receiver is pretty straightforward. Watch along as Larry Potterfield, Founder and CEO of MidwayUSA, provides some tips for assembling an AR-15 upper from a parts kit.  Topics covered include holding fixtures, sight installation fixtures, and carrier key screw torque specifications. These helpful tips should help avoid some time consuming mistakes during your next build.

Mr  Potterfield, is the forward assist on the AR 15 A1 different than a modern AR 15 rifle ? I'm building a AR15A1 and the forward assist appears to be somewhat different as the roll pin will pass buy it. Any assistance would be greatly appreciated.

@larryh502 It'll also leak gas if it comes loose and that will give you short stroking issues.

Anyone know what the lower receiver in the bottom right is @ 0:24?
I'm interested in uppers without forward assists.

@GoldenRing1989 Staking the bolt carrier key screws keeps them from unscrewing themselves out from the vibrations of cycling back and forth.If they unscrew out of the bolt carrier and the carrier key comes of the carrier while the rifle is being fired you will have one hell of a metal on metal jammed up rifle stopping mess in your upper reciever.

@rawimpact lol! Derp…

@drgonzo212 a year too late…

@rawimpact Buy the PRI upper receiver vise block and you'll be fine. It locks up the receiver via the pivot pins and the non milspec receiver with the high riser won't be an issue.

yeah thanks for not explaining what to do if you purchase a non milspec receiver such as the dpms high riser

As always great

Great Tips…

great vid