5.56x45mm NATO Upper Receivers

16" Billet Slick Side 5.56 Parkerized Mid-Length 1:7 M-LOK AR-15 Complete Upper

16" Billet Slick Side 5.56 Parkerized Mid-Length 1:7 M-LOK AR-15 Complete Upper

16" 5.56 Gov / SOCOM 1:8 Carbine M-LOK Upper Assembly

7.5" 5.56 DRP Pistol Quad Rail Complete Upper

Aero Precision M4E1 Enhanced No FA Complete Upper, 10.5" 5.56 Carbine, 9" Enhanced M-LOK - Anodized Black

16" Carbine 5.56 NATO 1:7 Complete Upper

Faxon Firearms Ascent 10.5" 5.56 Barrel Upper Receiver

16" Billet Slick Side 5.56 Parkerized Mid-Length 1:7 M-LOK AR-15 Complete Upper

16" Cold Hammer Forged AR 15 Upper Assembly

16" AR 15 "Tiger King" Complete Upper W/12" M-LOK Handguard

7.5" Stealth 5.56 NATO AR 15 Pistol Upper

Sons of Liberty Gun Works 14.7" Swampfox Complete Upper

Sons of Liberty 13.7" Pinned (16" OAL) Patrol 5.56 Upper

Sons of Liberty Gun Works EXO3 10.5" 5.56 NATO Upper

Luth-AR 11.5" Lightweight Complete Upper

Sons of Liberty Gun Works 11.5" M4-89 Upper

Sons of Liberty Gun Works 10.5" M4-89 Upper

Sons of Liberty Gun Works Patrol Complete Upper

Midwest Industries 10.5" AR 15 Pistol Upper

Daniel Defense DDM4V7 AR 15 Complete Upper

Battle Arms BAD556-LW Lightweight 7075-T6 Billet Upper Receiver

Battle Arms Workhorse 16" 5.56 NATO Upper Assembly (No BCG No CH)

Sons of Liberty Gun Works EXO3 16" 5.56 NATO Upper

Sharps Bros. SBUR04 Billet Upper Receiver