Built my first AR, and am having major issues with my PSA upper. Jams in feed ramps almost every cycle, whether manual or not. Pics and vid included

[burnface]

Can’t be sure I guess, but it definitely looks files down vs clean new machining. Kinda annoyed they haven’t told me what the resolution was!

[Bigrich85]

I had the same issue in the process of a return. It is a feed ramp issue

[Jammo]

Welcome to the forum @Bigrich85

[useful.easy.address]

I have a stampless 11.5 I never got to fire.

[BradE]

Well why the heck not! Go have fun, train, practice, compete, all of the above. Paint it silly colors if that appeals to you. Worst thing you can do is find out too late your tools or toys don’t work as you hoped.

[useful.easy.address]

No stamp.

[BradE]

No good answer there until this pistol brace crap is figured out.