5.56x45mm NATO Upper Receivers

Sons of Liberty Gun Works SOLGW M4-L89 5.56mm 11.5"Bbl Broadsword Upper SBR M4-L89BS-SBR-11.5

Sons of Liberty Gun Works SOLGW M4-L89 5.56mm 16"Bbl Broadsword Upper Rifle M4-L89BS-16

Sons of Liberty Gun Works SOLGW M4-L89 5.56mm 13.7" Broadsword Upper Rifle w/SF Compatible/ROTEX Mount M4-L89BS-13.7-SF

Sons of Liberty Gun Works SOLGW M4-L89 5.56mm 13.7"Bbl Broadsword Upper Rifle w/HUXWRX Mount M4-L89BS-13.7-XL

Sons of Liberty Gun Works SOLGW M4-L89 5.56mm 12.5"Bbl Broadsword Upper Pistol M4-L89BS-PISTOL-12.5

Sons of Liberty Gun Works SOLGW M4-L89 5.56mm 11.5"Bbl Broadsword Upper Pistol M4-L89BS-PISTOL-11.5

Sons of Liberty Gun Works SOLGW M4-L89 Rifle, 14.5"Bbl 5.56mm, with ASR mount, Ranger Green M4-L89-14.5-ASR-RGA

Sons of Liberty Gun Works SOLGW M4-L89 Rifle, 14.5"Bbl 5.56mm, with Plan B Mount, Ranger Green M4-L89-14.5-PB-RGA

Armalite M15 Tactical 5.56 NATO Upper Assy 14.5"

Armalite M15 Tactical Upper Assy 18" bbl UM15TAC18

Armalite M15 Tactical Upper Assy 16" bbl UM15TAC16

Armalite M15 3 Gun Upper Assy 18" bbl UM153GN18

Sons of Liberty Gun Works SOLGW L89 5.56mm 14.5" No Muzzle Device No BCG/CH Upper Receiver M4L89UPPER-14.5-556-NMD

Sons of Liberty Gun Works AR-15 L89 Pinned and Welded Complete Upper Receiver 5.56x45mm 13.7" Barrel 13.75" L89 M-LOK Rail

HK MR556 UPPER RECEIVER KIT 9 MRS HANDGUARD

ANDERSON Complete sport upper 5.56 16" NO FA BCG or CH

ANDERSON 7.5" Complete Upper 5.56 Pistol No BCG / CH

ANDERSON 24'' Stainless Steel Barrel Complete Upper BCG+CH

JL Billet Lightweight Billet Upper Receiver AR 15 Black

AR-STONER AR-15 Complete Upper Receiver 5.56x45mm NATO 18" Barrel Rifle Length Gas System 12" M-LOK Handguard Black

AR-STONER AR-15 Pistol Build Kit with Upper Receiver Assembly 5.56x45mm NATO 8" Barrel M-LOK Handguard, Complete Lower Receiver Parts Kit

Andro Corp 5.56 NATO Barreled Upper Receiver - 10.5"

AR-STONER AR-15 Build Kit with Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Length 15" M-LOK Handguard, Complete Lower Receiver Parts Kit, Stock Assembly 6-Position Mil-Spec Collapsible

AR-STONER AR-15 Pistol Build Kit with Upper Receiver Assembly 5.56x45mm NATO 10.3" Barrel M-LOK Handguard, Complete Lower Receiver Parts Kit