Stripped upper receiver

[central fl cracker]

I am trying to find 3 stripped uppers one being AR 15's Smith-Wesson, DPMS and a Ruger or even a Sig Sauer.

[Ryno12]

I'd try asking in this thread:

https://www.m4carbine.net/showthread.php?100661-The-Official-Where-Can-I-Get-It-Thread