Results for 5.56x45mm NATO Complete Uppers

12.5 5.56 NATO Government Carbine M-LOK Upper Assembly

NBS 16 5.56 NATO Pencil Midlength Lightweight M-LOK Upper Assembly

NBS 10.5 Slick Side Billet 5.56 Nitride Carbine M-LOK Upper Assembly

NBS 16" 5.56 M4 Carbine 1:8 M-LOK Upper Assembly - Black

NBS 16 5.56 Gov / SOCOM Midlength Ultralight M-LOK Upper Assembly

LMT Defense 16" 5.56 Chrome-Lined 1:7 Twist Barreled Upper Receiver

NBS 16 5.56 HBAR Fluted Stainless Midlength M-LOK Upper Assembly

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

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

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

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

LMT 10.5" 5.56 Chrome Lined 1:7 Barreled Upper Receiver

NBS 7.5" 5.56 DRP Pistol Quad Rail Complete Upper

NBS 5 5.56 Micro 1:5 M-LOK Upper Assembly

NBS 14.5" (16" Overall) Mid-Length 5.56 NATO 1:7 Complete Upper w/ FSB and Pinned/Welded VG6 Precision Epsilon Muzzle Brake

NBS 16" Carbine 5.56 NATO 1:7 Complete Upper

NBS 14.5" Mid-Length 5.56 NATO 1:7 Complete Upper w/ Front Sight Base

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

Stag Arms AR-15 7.5 5.56 M-LOK Pistol Left-Handed Complete Upper - FDE/Phosphate-Chrome Lined

Stag Arms AR-15 10.5" 5.56 Tactical M-LOK Carbine Left-Handed Complete Upper

Stag Arms Stag 15 Tactical Left-Handed QPQ 16 in 5.56 Upper - FDE

PSA 20" CHF Rifle Length 5.56 NATO 1:7 Premium Rifle Kit - 8818

PSA 16" Nitride 1:7 M4 Carbine 5.56 NATO MOE AR-15 Upper Assembly, Black - With Rear Mbus No BCG/CH

PSA 14.7" Mid-length CHF 5.56 NATO 1:7 13.5" Lightweight M-Lok Upper Pinned & Welded - No BCG or CH - 77932796