Primary Weapons Systems

Located in Boise, Idaho, Primary Weapons Systems is a nationally renowned and federally-licensed manufacturer of premium muzzle devices, gun parts, and other accessories for a variety of tactical and sporting rifles. At GunMag Warehouse, we carry a huge selection of premium flash hiders, muzzle brakes, AR-15 parts, and more, offered at prices designed to fit any budget. Browse our full collection today!

Primary Weapons Systems A5 Enhanced A5H2 Buffer Tube Assembly

$129.99 $119.99 Save $10.00
Primary Weapons Systems A5 Enhanced Buffer Tube

$79.99 $74.99 Save $5.00
Primary Weapons Systems UXR AR-15 Magwell Conversion Kit

$129.99 $109.99 Save $20.00
Primary Weapons Systems AR-15 Ratchet Lock Castle Nut / End Plate Set
Out of stock

$44.99 $39.99 Save $5.00
Primary Weapons Systems AR-15 Ratchet Lock Castle Nut / End Plate Set with Enhanced Pistol Buffer Tube
Out of stock

$109.99 $99.99 Save $10.00
Primary Weapons Systems AR-15 Ratchet Lock Castle Nut / End Plate Set with Enhanced Buffer Tube
Out of stock

$109.99 $99.99 Save $10.00

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