Aero M4E1 upper receiver

[hlee]

I've got one waiting on a barrel in the mail. I usually True the receiver face on standard uppers, but the "face" of this one is hidden down below where the handguard attaches. And, the truing bar I have is too thick to work (that's never been the case before ). So, have you built a new file on one of these uppers? Did you true the face? How? Have someone do it? Who? Thanks.

 

[srt-4_uk]

Theres a company that makes one specifically for that Aero.

 

[srt-4_uk]

Use this lapping tool to square the upper receiver face of an AR-10 or AR-15. This will improve the mating between the barrel and receiver & needs to be used with lapping compound.

Use this lapping tool to square the upper receiver face of an AR-10 or AR-15. This will improve the mating between the barrel and receiver & needs to be used with lapping compound. The pilot will also fit into the bolt carrier tunnel to keep perfect alignment throughout the receiver for improved...

www.gandgrifleworks.com

 

[rpoL98]

damn, more tools I gotta buy. but thanks for the link. seriously.

I have an M5E1, just one, and was wondering this same thing since I lap all my uppers. Looking at this, it's sufficient to make me not want to buy an M4E1, but I'm already in with the M5E1. Unless I just never build it... white elephant.

 

[SgtDog0311]

They sell them separately. The M5E1 one was $37.50 and delivery was very fast.