5.56x45mm NATO Upper Receivers

PSA 16" Nitride 1:7 M4 Carbine 5.56 NATO MOE AR-15 Upper Assembly, OD Green - with BCG/CH

PSA 10.5" CHF 1:7 A2 Carbine 5.56 NATO Premium Classic AR-15 Upper Assembly - with BCG/CH

PSA 10.5" 5.56 NATO 1/7" Nitride Upper w/ BCG & CH

PSA 20" Rifle Length 1/7 Nitride 15" Lightweight M-lok Upper - With BCG & CH

PSA 7" Nitride 1:7 Pistol Length 5.56 NATO Marauder AR-15 Upper Assembly, FDE - No BCG/CH

PSA 16" M4 Carbine 1:7 Nitride 13.5" Lightweight M-Lok Freedom Upper w/ MBUS Sight Set - No BCG/CH

PSA Freedom AR-15 Upper 5.56 16" M4 Carbine 1:7 Nitride 13.5" MLOK, No BCG/CH - 516444536

PSA 10.5" 5.56 NATO 1/7" Nitride MOE Pistol Upper No BCG or CH

PSA Freedom"AR-15 Upper 16" Nitride 1:7 A2 Mid-Length 5.56 NATO MOE w/ Rear Mbus No BCG/CH

PSA 16" M4 Nitride 1:7 MOE BLK Freedom Upper With BCG & CH - 508045

PSA Freedom AR-15 Upper 5.56 16" Carbine 1:7 M4 Nitride, No BCG & CH - 507819

PSA 16" Mid-length 5.56 NATO 1:7 Nitride Freedom Upper - with BCG and CH - 507281

PSA 16" Mid-length 5.56 NATO 1:7 Nitride Freedom Upper - No BCG or CH - 507280

PSA 10.5" 5.56 NATO 1:7 Nitride Upper - without BCG or Charging Handle - 507020

PSA 16" CHF 1:7 M4 Carbine 5.56 NATO Premium Classic AR-15 Upper Assembly - No BCG/CH

PSA 16" CHF 1:7 A2 Mid-Length 5.56 NATO Premium Classic AR-15 Upper Assembly - No BCG/CH

Noveske AR-15 Gen 3 5.56MM NSR-15 M-LOK Upper - 18" SPR

Modern Materiel AR-15 5.56 Patrol Pistol - 11.75"

Maxim Defense MDX 508 5.56 Mil-Spec Complete Upper - 8.5"

Maxim Defense MDX 505 PDX Mil-Spec Complete Upper - 5.5" Black

Maxim Defense MDX 505 PDX Mil-Spec Complete Upper - 5.5" Arid

Lewis Machine & Tool (LMT) AR-15 FSB 5.56 Barreled Upper Receiver - 10.5"

Lewis Machine & Tool (LMT) AR-15 5.56 NATO Flattop Stripped Upper Receiver - 16"

Lewis Machine & Tool (LMT) AR-15 FSB 5.56 Barreled Upper Receiver - 14.5"