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Luth-AR Horrible Quality C7 Upper - AR15.COM
Finally got a C7 upper : r/RetroAR
C7/C8/M16E1 Stripped Upper Receiver With M4 Ramps - TNTE Sales Inc.
The LUTH-AR Retro A1 Rifle Parts Lineup Is Extensive and Awesome
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BROWNELLS AR-15 C7 STRIPPED UPPER RECEIVER
TNTE Billet C7/C8/M16E1 Upper Receiver with M4 Ramps-Stripped - TNTE Sales Inc.