Complete Upper Receivers

GE SUPER DTY MOD1 5.56 13.9" URG BLK

Geissele Automatics

GE URG-I NC 556NATO 14.5" BLK/DDC

Geissele Automatics

FAXON ARAK-21 7.62X39 16" UPPER

Faxon Firearms

FAXON ARAK-21 556NATO 16" UPPER

Faxon Firearms

FAXON ION ULTRALT 16" 556NATO UPPER

Faxon Firearms

FIGHT MCR MIL DF UPR 556 MLOK 16.25"

FightLite

FIGHT MCR MIL DF UPR 556 PIC 16.25"

FightLite

FIGHT MCR DUAL FD UPR 556 MLOK 16.25

FightLite

FIGHT MCR DUAL FD UPR 556 PIC 16.25"

FightLite

DD M4V7 LW UPPER 556 16" MLOK BLK

Daniel Defense

DD M4V7 UPPER 556 16" MLOK BLK

Daniel Defense

DD M4A1 UPPER URG 14.5"PB 556 FDE

Daniel Defense

DD M4A1 FSP UPR RCVR 14.5 PW 556 FDE

Daniel Defense

COLT EPR UPPER 5.56 16" MLOK BLK

Colt's Manufacturing

CMMG UPPR RSLT MK4 6MM ARC 16.1" BLK

CMMG

CMMG UPPR RSLT MK4 350LEG 16.1" BLK

CMMG

BLACK RAIN UPPER 458SOCOM 16" BLK

Black Rain Ordnance

BAD 16 UPPR WRKHORSE 556 AMBI C BLK

Battle Arms Development

BAD 16 UPPR WRKHORSE 556 AMBI BLK

Battle Arms Development

BAD WORKHORSE 556 UPPR 16" BLK N/BCG

Battle Arms Development

BAD 16 UPPR AUTH ELITE 556AMBI C BLK

Battle Arms Development

BAD 16 UPPR AUTH ELITE 556 AMBI BLK

Battle Arms Development

AERO M4E1-T UPPER 5.56 16" FDE

Aero Precision

AERO M4E1-T UPPER 5.56 16" BLK

Aero Precision