Primary Weapons Systems Gun Parts

Current Deals & Offers

GrabAGun Updated Nov 01, 2026

13% OFF

Primary Weapons Systems Mount Threaded Barrels for 1/2x28

$69.95 $79.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems FRC Flat 3 Port Compensator 223 Rem 1/2-28

$89.95

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GrabAGun Updated Nov 08, 2026

6% OFF

Primary Weapons Systems UXR .300 AAC Blackout 14.5 P&W Barrel 30-Rounds

$2999.95 $3199.99

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GrabAGun Updated Nov 08, 2026

6% OFF

Primary Weapons Systems UXR .223 Wylde 14.5 P&W Barrel 30-Rounds

$2999.95 $3199.99

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GrabAGun Updated Nov 08, 2026

5% OFF

Primary Weapons Systems MK1 Mod 2-M 5.56 16 P&W Barrel 30-Rounds

$2199.95 $2309.95

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GrabAGun Updated Nov 08, 2026

10% OFF

Primary Weapons Systems FRC 2-Port Compensator 5/8x24

$89.95 $99.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems 3FRC12A 3F FRC Comp Flat 3 Port 223 1/2x28 AR

$84.95

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TLO Outdoors Updated Nov 08, 2026

12% OFF

Primary Weapons Systems MOD 2 Enhanced Steel Carbine H2 Buffer 4.5 oz, Fluted, EBUFFER-H2

$43.98 $49.95

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Primary Arms Updated Nov 08, 2026

Primary Weapons Systems MK114 MOD 2-M Complete AR-15 Upper Receiver - 6mm ARC - 14.5"

$1249.95

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GrabAGun Updated Nov 08, 2026

6% OFF

Primary Weapons Systems A5 Enhanced Buffer Tube

$74.95 $79.95

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GrabAGun Updated Nov 08, 2026

Primary Weapons Systems FRC 3-Port Compensator 1/2x28

$89.95

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GrabAGun Updated Nov 08, 2026

10% OFF

Primary Weapons Systems PWS FRC 5/8X24 COMP SPRSSR READY BLK

$89.95 $99.95

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GrabAGun Updated Nov 08, 2026

10% OFF

Primary Weapons Systems FRC Flat 3-Port Compensator 1/2x28

$89.95 $99.95

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GrabAGun Updated Nov 08, 2026

10% OFF

Primary Weapons Systems FRC Flat 3-Port Compensator 5/8x24

$89.95 $99.95

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GrabAGun Updated Nov 08, 2026

10% OFF

Primary Weapons Systems FRC Flat 3-Port Compensator 5.56 1/2x28

$89.95 $99.95

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GrabAGun Updated Nov 08, 2026

10% OFF

Primary Weapons Systems FRC 3-Port Compensator 5/8x24

$89.95 $99.95

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GrabAGun Updated Nov 08, 2026

18% OFF

Primary Weapons Systems A5 Enhanced Buffer Tube Kit

$139.99 $169.99

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Shooting Surplus Updated Nov 01, 2026

Primary Weapons Systems PWS MK111 Mod 1-M Upper 223 Wylde 11.85 FRC Piston

$1113.15

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GritrSports Updated Oct 31, 2026

Primary Weapons Systems MK1 MOD 2-M 5.56mm NATO Black Ambi Complete Rifle Lower Receiver (MK1-M2-LWR-CR)

$629.95

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TLO Outdoors Updated Nov 01, 2026

9% OFF

Primary Weapons Systems Enhanced MOD 2 H3 Carbine Buffer, 4140 Steel Fluted Body EBUFFER-H3

$99.98 $109.95

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TLO Outdoors Updated Nov 08, 2026

13% OFF

Primary Weapons Systems MOD 2 FSC556 Flash Suppressing Compensator 1/2x28 .223/5.56 Black 3G2FSC12A-1F

$86.98 $99.95

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TLO Outdoors Updated Nov 08, 2026

13% OFF

Primary Weapons Systems FRC Suppressor-Ready 2-Port Compensator, 1/2x28 Black FRC-F-2P-1-2X28

$86.98 $99.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems Pws Mk1 Mod 2-m Upper 300blk 9.75 Ls Frc Comp

$1433.15

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems Primary Weapons 4BTRLPB-1F Castle Nut Ratchet Lock Black

$39.95

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems FRC 3-Port Flat Compensator 5/8-24, Black

$89.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems FRC 3-Port Flat Compensator 1/2-28, Black

$89.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems FRC 2-Port Tapered Compensator 5/8-24, Black

$89.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems FRC 3-Port Flat Compensator 1/2-28, Black

$84.99

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS ENHANCD STL BUFFR CARB H2 4.5OZ

$39.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems Pws A5 Enhanced Buffer Tube

$74.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems UXR 223 WYLDE 14.5'' BARREL CONVERSION KIT

$515.50

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems UXR 300 AAC BLACKOUT 14.5'' BARREL CONVERSION KIT

$515.50

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS MK116 MOD 1-M UPR 16" 762X39 BLK

$1209.95

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GrabAGun Updated Nov 08, 2026

6% OFF

Primary Weapons Systems UXR Elite .223 Wylde 16 Barrel 30-Rounds

$2499.95 $2650.00

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GrabAGun Updated Nov 08, 2026

6% OFF

Primary Weapons Systems UXR Elite .223 Wylde 14.5 Barrel 30-Rounds

$2499.95 $2650.00

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GrabAGun Updated Nov 08, 2026

Primary Weapons Systems FSC Compensator MOD 2 .308 5/8X24 RH BLK

$99.95

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Optics Planet Updated Oct 31, 2026

13% OFF

Primary Weapons Systems .578x28 Piston Anodized Finish Black

$76.95 $87.95

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Optics Planet Updated Oct 31, 2026

14% OFF

Primary Weapons Systems FRC Compensator 223 Remington/556NATO Suppressor Mount Black Fits 1/2X28

$84.95 $99.00

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Optics Planet Updated Oct 31, 2026

19% OFF

Primary Weapons Systems UXR MagWell Assembly For Medium Frame 308 Winchester AR10 Black

$129.95 $159.95

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Optics Planet Updated Oct 31, 2026

7% OFF

Primary Weapons Systems MK111 MOD2-M Upper Receiver .223 Wylde 11.85 inch Barrel Matte Black

$1399.95 $1499.95

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Optics Planet Updated Oct 31, 2026

9% OFF

Primary Weapons Systems Enhanced Pistol Buffer Tube w/ Ratchet Lock Castle Nut & Endplate Carbine Length Black

$99.95 $109.95

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Optics Planet Updated Oct 31, 2026

13% OFF

Primary Weapons Systems PWS FRC COMP FLAT 3PORT 223 1/2X28

$84.95 $97.69

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Optics Planet Updated Oct 31, 2026

15% OFF

Primary Weapons Systems FSC556 MOD 2 FSC Series Flash Suppressing Compensator Muzzle Device .223 Black 1/2x28 threads

$84.96 $99.95

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BOTACH Updated Oct 26, 2026

Primary Weapons Systems PWS Enhanced Buffer Tube w/ Ratchet Lock Castlenut & Endplate

$99.98

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems Pws Enhanced Steel Body Buffer Carbine H4

$163.66

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Shooting Surplus Updated Nov 01, 2026

Primary Weapons Systems PWS 1/2X28 THREAD MOUNT BLK - DTMOUNT-1-2X28-P

$69.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS .578X28 PISTON BLK - PISTON-578X28

$76.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS 13.5X1LH PISTON BLK - PISTON-135X1LH

$76.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS MK116 MOD 2-M UPPER 16.1" BLK - MK1-M2U-223-16

$1399.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems Pws Mod 2 Bolt Catch

$24.36

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS MK116 MOD 1-M UPPER 16.1" BLK

$1113.15

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS FRC 1/2X28 COMP SPRSSR READY BLK

$89.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS UXR ELT CONV KIT .223 WYLDE 16"

$499.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems Pws Mk114 Mod 1-m Upper 6arc 14.5 Ls Frc Comp

$1100.44

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems Pws Mk114 Mod 2-m Upper 6arc 14.5 Ls Frc Comp

$1338.66

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems .308 SHIM SET

$5.25

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems MK1 ALPHA LT 223 WYLDE 14.5''BBL 11.5'' MLOK HDGD KODIAK BROWN

$1229.99

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems Primary Weapons 182M111UA0B MK1 Mod2-M Upper 223 Wylde 11.85" Black Barrel, 7075-T6 Aluminum Black Receiver, 11" PWS PicLok (M-Lok Or Picatinny) Handguard For AR-15 Optics Ready

$1327.67

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems Primary Weapons 5PWCBSW-1F Black

$179.95

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS MOD 2 FSC556 .223 1/2X28 BLK

$84.96

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Shooting Surplus Updated Nov 08, 2026

Primary Weapons Systems PWS FSC30 FH/COMP 308 5/8X24 RH BLK

$84.96

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Palmetto State Armory Updated Nov 08, 2026

9% OFF

Primary Weapons Systems H4 Enhanced Carbine Buffer, Black

$173.99 $191.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems EBT Mod 2 End Plate and Ratchet Lock Castle Nut, Black

$39.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems Thread Mount 5/8-24, Black

$56.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems UXR Elite Conversion Kit .300 AAC Blackout Fits PWS UXR, Black

$534.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems UXR Elite Conversion Kit .223 Wylde Fits PWS UXR, Black

$534.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems FRC 2-Port Flat Compensator 1/2-28

$89.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems FRC 2-Port Flat Compensator 5/8-24

$89.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems Piston M13.5x1mm LH, Black

$63.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems Piston 37/64-28, Black

$76.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems UXR Magwell Assembly, Black

$139.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems UXR Magwell Assembly, Black

$109.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems UXR Magwell Assembly, Black

$139.99

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Palmetto State Armory Updated Nov 08, 2026

Primary Weapons Systems FSC 1/2-28 Compensator, .223 Rem - 3G2FSC12A1

$85.99

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