Primary Weapons System PWS Complete 5.56mm MK-112 Upper

Primary Weapons System PWS Complete 5.56mm MK-112 Upper

MK-112 Complete Gas Piston Upper Receiver 12.5-inch barrel from Primary Weapon Systems AR15/M4

Primary Weapons System PWS Complete 7.62 x 39mm MK-114 Upper

Primary Weapons System PWS Complete 7.62 x 39mm MK-114 Upper

MK-114 7.62 x 39mm Complete Gas Piston Upper Receiver 14.5-inch barrel from Primary Weapon Systems. Pinned Flash Hider

Primary Weapons Systems Enhanced Buffer Tube - 416

Primary Weapons Systems Enhanced Buffer Tube - 416

The PWS Enhanced Buffer Tube is the first major upgrade and improvement to the buffer tube in years! Click Picture for Full Benefits of the EBT 416. Incoming 3rd week October

Primary Weapons Systems MK1, Mod1 Upper, 7.75" Barrel, 7" KeyMod

Primary Weapons Systems MK1, Mod1 Upper, 7.75" Barrel, 7" KeyMod

PWS MK1, MOD 1 UPPER, 7.75IN BARREL, .223 WYLDE, TRIAD 556

Primary Weapons Systems PWS Enhanced Buffer Tube Pistol

Primary Weapons Systems PWS Enhanced Buffer Tube Pistol

PWS Enhanced Pistol Buffer Tube for the AR-15/MK1/MK2 Series Pistols

PWS MK1, MOD 1 UPPER, 14.5IN BARREL, .223 WYLDE, PINNED FSC 556

PWS MK1, MOD 1 UPPER, 14.5IN BARREL, .223 WYLDE, PINNED FSC 556

MK1 MOD 1 Complete Gas Piston Upper Receiver 14.5-inch barrel from Primary Weapon Systems AR15 M4

PWS MK107 Diablo Complete 7.62x39mm 7-Inch Upper

PWS MK107 Diablo Complete 7.62x39mm 7-Inch Upper

Primary Weapon Systems MK107 Diablo Complete Piston AR Upper chambered in 7.62x39mm 7-Inch Barrel
**Click Picture for Full Specs**

Primary Weapons System PWS Upper 5.56mm MK1 MOD1 10.75 inch

Primary Weapons System PWS Upper 5.56mm MK1 MOD1 10.75 inch

MK1, Mod 1 Upper, 10.75" Barrel, 10" KeyMod Rail, .223 Wylde, Black, Triad 556 Primary Weapon Systems AR15/M4

Primary Weapons System PWS Diablo Complete 5.56mm 7-Inch Upper

Primary Weapons System PWS Diablo Complete 5.56mm 7-Inch Upper

PWS Diablo MK 107 Complete Gas Piston Upper Receiver - 7-inch barrel - from Primary Weapon Systems **Click Picture for Full Specs** In-Stock!!

Primary Weapons System PWS Complete MK116 5.56mm 16-Inch Upper

Primary Weapons System PWS Complete MK116 5.56mm 16-Inch Upper

Complete Gas Piston Upper Receiver - 16 inch barrel - from Primary Weapon Systems **Click Picture for Full Specs**

Primary Weapons Systems Enhanced Buffer Tube - Mil Spec

Primary Weapons Systems Enhanced Buffer Tube - Mil Spec

The PWS Enhanced Buffer Tube is the first major upgrade and improvement to the buffer tube in years! Click Picture for Full Benefits of the EBT

Primary Weapon Systems Tungsten ST2 Buffer

Primary Weapon Systems Tungsten ST2 Buffer

The ST2 Buffer is filled with high density tungsten powder instead of solid weights which helps smooth cycling and reduce felt recoil. The ST2 buffer is slightly heavier than the H2 buffer.