5.56x45mm NATO Upper Receivers

Centurion Arms CM4 5.56 Forged AR-15 Receiver Set

Sabre-10 Builder Set - 15" QDSM Rail, Black

Sabre-10 Builder Set - 12.5" Quad Rail, FDE

Sabre-15 Builder Set - 15" QDSM Rail, Moss Green

Sabre-15 Builder Set - 13" Quad Rail, Burnt Bronze

Sabre-15 Builder Set - 9.75" Quad Rail, Burnt Bronze

Sabre-15 Builder Set - 13" Quad Rail, FDE

PSA 16" M4 Carbine-Length 5.56 NATO 1:7 Nitride B5 MLOK Rifle Kit, Black

PSA PA-15 Left Hand M4 Classic w/ BCG & CH

PSA 16" 5.56 ML Nit 13.5 LW MLOK MOE EPT Rifle Kit - w/o BCH, CH

PSA AR-15 16" Mid-Length 5.56 NATO 1:7 Nitride 13" FDE Lightweight Hex M-Lok MOE EPT Rifle Kit, FDE

PSA "Sabre" Forged 10.5" 5.56 FN CHF CL FSB with 10" Two-Piece Quad Rail Pistol with Magpul BTR Brace

PSA "Sabre" Forged 13.7" FN CHF CL 5.56 with 13" Sabre QD Rail Smoke Bronze P/W B5 Bravo - Smoke

PSA 11.5" 5.56 NATO 1/7 Nitride 10.5" Lightweight Hex M-Lok MOE EPT SBA3 Pistol Kit

PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13" Hex Lightweight M-Lok Classic Rifle Kit With MBUS Sight Set

PSA "Sabre" Forged 11.5" Nitride 5.56 with 10.75" Hodge P-Lock Rail, Maxim PDW Brace, and Kung Fu Grip

Sabre-15 Enhanced Builder Set - 15" QDSM V2 Rail, Burnt Bronze

Sabre-15 Enhanced Builder Set - 15" QDSM V2 Rail, Champagne

Sabre-15 Enhanced Builder Set - 15" QDSM V2 Rail, Moss Green

Sabre-15 Enhanced Builder Set - 15" QDSM V2 Rail, Black

Sabre-15 Enhanced Builder Set - 13" QDSM V2 Rail, Moss Green

Sabre-15 Enhanced Builder Set - 9.75" QDSM V2 Rail, Blue Titanium

Sabre-15 Enhanced Builder Set - 9.75" QDSM V2 Rail, Champagne

Sabre-15 Enhanced Builder Set - 9.75" QDSM V2 Rail, FDE