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Wolf Performance A1 Complete Upper 12.5" 5.56 NATO 1:7 Piston Driven
Wilson Combat TR556SBRCG11RT7 Match Grade Barrel 5.56x45mm NATO 11.3" AR-15 416R Stainless Steel Bead Blasted
CMMG Barrel Sub-Assembly 55D590A 16.1" 5.56 NATO 416R Stainless Bead Blasted Finish AR-15 Compatible
Rosco Manufacturing K9 13.95" 5.56 NATO 416R Stainless Nitride Barrel for AR-15
Battle Arms Development Workhorse WH556-URS-ODG OD Green Anodized AR-15/M4 Upper Receiver
Colt LE6920CK Upper Receiver Conversion Kit .223/5.56 NATO 16.1" Bl
TacFire 10.5" 5.56 NATO Black Nitride Complete Upper Assembly - SSBU55610
Sons of Liberty Gun Works Broadsword 89 V2 Upper, AR-15, 5.56 NATO, 13.7" Pinned Barrel, Black Finish.
Q LLC Sugar Weasel Upper AR-15 5.56 NATO 13" Barrel FDE Finish ACC-SW-556-13IN-UPPER
LaRue Tactical LT007 Stripped Upper Receiver, AR-15 Compatible, .223/5.56, Aluminum, Black Finish, MPN LT007