Would you do anything with the lower?
I’ve seen the picture of M4 Extension M4 Receiver, Rifle Receiver Rifle Extension, ect. I was going through my pictures and came across this and was curious if anything can be done or if it’s ok as is? The top picture is a factory rifle and the bottom picture is my “Build” the right feed ramp is what I’m a little concerned about? Thanks for any help. https://uploads.tapatalk-cdn.com/202...dfac4b9bb9.jpg
https://uploads.tapatalk-cdn.com/202...d73ef5b5f5.jpg
Would you do anything with the lower?
There is nothing really wrong here, the first pic is an M16 feed ramp extension and M16 feed ramp upper receiver (no cut). The second pic is an M4 feed ramp extension with M4 feed ramp cuts in receiver (properly matched). The first (M16) pic has small imperfection in the right hand side ramp lip but you should never seen any contact with that. I see nothing at all wrong with your rifle on second pic... maybe slight loss of plating? Nothing looks chewed up.
Andrew - Lancaster, CA
NRA Life Member, CRPA member, Calguns.net contributor, CGF / SAF / FPC / CCRKBA / GOA / NAGR / NRA-ILA contributor, USCCA member - Support your defenders!