Hello all,
I made a few posts some months back, got some great advice on an AR-15 precision build - near complete (aside from a scope). All's come together nicely, looks like the different parts are a good fit, with one exception. Doing a test fit, I can't seem to get the gas key end of the gas tube into the upper receiver. It's an aero precision upper, and I have two tubes - rifle length, one from aero precision as well. The receiver hole (square) has those four cloverleaf tabs coming in from each side. Looking at assembly videos, doesn't seem that significant force is required, haven't got out a mallet yet, but doesn't even go in partway. I've put in a question to aero precision, and haven't tried filing material away from the hole in the receiver yet. Is this a common issue? I know it isn't a barrel nut timing issue - I bought a HWK handguard, and their nut is low enough that the tube runs over it, not through. Ideas? Happened to anyone else?
I made a few posts some months back, got some great advice on an AR-15 precision build - near complete (aside from a scope). All's come together nicely, looks like the different parts are a good fit, with one exception. Doing a test fit, I can't seem to get the gas key end of the gas tube into the upper receiver. It's an aero precision upper, and I have two tubes - rifle length, one from aero precision as well. The receiver hole (square) has those four cloverleaf tabs coming in from each side. Looking at assembly videos, doesn't seem that significant force is required, haven't got out a mallet yet, but doesn't even go in partway. I've put in a question to aero precision, and haven't tried filing material away from the hole in the receiver yet. Is this a common issue? I know it isn't a barrel nut timing issue - I bought a HWK handguard, and their nut is low enough that the tube runs over it, not through. Ideas? Happened to anyone else?