Primary Weapons Systems is a federally-licensed firearms manufacturer in Boise, Idaho (est. 2007). They produce AR-15 (MK1) and AR-10 (MK2) rifles, uppers, muzzle devices, suppressors, handguards, and buffer systems using in-house CNC machining.

What is the difference between the MK1 MOD 1-M and MOD 2-M?

MOD 1-M has a KeyMod (PicMod) handguard. MOD 2-M has M-LOK and a fully ambidextrous lower. Both use the PWS long-stroke piston with a 3-setting adjustable gas regulator.

How do I identify my PWS model?

MOD 0: quad-rail (pre-mid-2015). MOD 1: KeyMod with forward assist. MOD 1-P: updated KeyMod (2016). MOD 2-M: M-LOK with ambi controls. Model and serial are on the lower receiver.

What calibers does PWS offer?

MK1: .223 Wylde, .300 BLK, 7.62x39. MK2: .308 Win / 7.62 NATO, 6.5 Creedmoor. PCC: 9mm.

What does the PWS long-stroke piston system do?

It cycles the bolt carrier via a full-length operating rod and gas piston, keeping carbon and heat out of the receiver. The 3-setting gas regulator supports standard, suppressed, and adverse-condition use.

What buffer weight should I use with a PWS upper?

H2 buffers are recommended. A standard carbine buffer can cause over-gassing. Use the H2 Enhanced Buffer (4.4 oz) for standard use or H2 Suppressor Weight Buffer (4.5 oz) for suppressed fire.

What is the difference between PWS buffer tubes?

Enhanced Buffer Tube: 6-position for stocks or braces. Pistol Buffer Tube: fixed-length for AR pistols. Modified Enhanced Buffer Tube: Law Tactical folding adapter compatible. All include the Ratchet Lock Castle Nut and Endplate Set.

A 1/2x28 flash suppressing compensator for .223/5.56 that reduces both muzzle flash and rise. BATFE has confirmed it is not a suppressor.

Does PWS make muzzle devices for AK and HK rifles?

Yes. FSC47 MOD 2 and JTAC47 are 14x1 LH for AK-47. FSC HK is 15x1 for HK91/G3. CQB74 is 24x1.5mm for .308 HK platforms.

What suppressors does PWS make?

BDE 22 (.22 LR), BDE 556 (5.56), BDE 9 (9mm), BDE 762 (.308/7.62), BDE 338 (.338/8.6), BDE 45 (.45). All modular and serviceable. NFA - Form 4 and $200 tax stamp required.

What is the T3 Summit?

A straight-pull biathlon toggle bolt action for Ruger 10/22-compatible platforms in .22 LR. Available as a complete rifle or bare action with P3 extended magazine release.

Does PWS offer LE or military discounts?

Yes. Use the contact form at primaryweapons.com/contact and select LE/MIL Discount as the subject.

How do I find an authorized PWS dealer?

Use the dealer locator at primaryweapons.com/locator/partnership/dealerlist. To become a dealer visit primaryweapons.com/locator/partnership/index.

Where are PWS product manuals?

Available at primaryweapons.com/pws-manuals. Contact customer service to request a hard copy.

How do I submit a warranty or RMA?

Submit at primaryweapons.com/warrantyrequest. Warranty info at primaryweapons.com/pws-warranty.

What is the expected barrel life of a PWS rifle?

.223 Wylde: 20,000-30,000 rounds. .300 BLK: 15,000-20,000. 7.62x39: 10,000-15,000. Varies with suppressor use, maintenance, and ammo.

PWS

MK114 MOD 1-M Upper 6MM ARC

The MK114 MOD 1 Upper delivers unmatched precision and versatility, now chambered in the highly efficient 6MM ARC. Designed to provide flat trajectories, reduced recoil, and exceptional energy...

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$1,299.95

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MK111 MOD 2-M Rifle .223 Wylde (SBR)

The MK111 MOD 2-M operates on the highly acclaimed PWS Long Stroke Piston System, renowned for its reliability and reduced fouling. The inclusion of a 3-setting Adjustable Gas System allows users to...

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$2,309.95

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5/8x24 Suppressor Thread Mount

This PWS Pistol Suppressor Thread Mount offers 5/8x24 threading for broad compatibility with popular pistol models. The thread interface is 1.125-28" - also known as 'Alpha' and is compatible with...

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$79.95

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MK114 MOD 1-M Upper .223 Wylde (Pinned)

The MK114 MOD 1-M Upper is equipped with the renowned PWS PWS long-stroke piston system, maintaining the reliability that PWS owners have come to trust. This line features a free-float MLOK...

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MK111 Compound Rifle, .223 Wylde, Kodiak/FDE (NFA Item)

The MK111 Compound combines the best of both worlds—featuring the robust Mod 1 upper with a full M-LOK™ handguard and forward assist, paired with the refined and ergonomic Mod 2...

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$2,067.95

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Enhanced Steel Body Buffer, Carbine, H2, 4.4 oz.

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The PWS Enhanced Steel Body Carbine H2 buffer is a standard weight, and ships with all MK1 complete lowers as well as rifles. The 4140 Steel Body Buffers have a unique fluted design with minimum...

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$49.95

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MK116 MOD 1-M Upper .223 Wylde

(1)

The MK116 MOD 1-M Upper is equipped with the renowned PWS PWS long-stroke piston system, maintaining the reliability that PWS owners have come to trust. This line features a free-float MLOK...

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$1,299.95

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Alpha LT Upper - Kodiak Brown

Available Now At Brownells The Alpha, a standout among PWS's rifle lineup as well as a bit of a throwback, distinguishes itself through a meticulous fusion of precision enhancements. Boasting a...

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$1,349.95

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MK1 MOD 1-M M-LOK Replacement Rail- 116 (.223)

The MK1 MOD 1-M Replacement rail is for owners of PWS MK1 MOD 1 owners to replace their current KeyMod rail with MLOK®. Includes mounting hardware and instructions. Please note, these handguards...

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$149.95

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MK116 PRO Upper

(3)

Introducing the MK116 PRO Upper from the PWS MK1 PRO Line, featuring the renowned PWS long-stroke piston system tailored specifically for suppressor enthusiasts. This budget-friendly option upholds...

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$799.95

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MK114 MOD 2-M Rifle (.223 Wylde) Kodiak Brown

The MK114 MOD 2-M operates on the highly acclaimed PWS Long Stroke Piston System, renowned for its reliability and reduced fouling. The inclusion of a 3-setting Adjustable Gas System allows...

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$2,309.95

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MK114 MOD 2 Rifle 6MM ARC (Pinned)

The MK114 MOD 2-M is built for long-range precision and versatility, chambered in the highly efficient 6MM ARC. Offering flat trajectories, reduced recoil, and exceptional energy retention, this...

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$2,309.95

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MK118 MOD 1-M Upper 6MM ARC

The MK118 MOD 1 Upper delivers unmatched precision and versatility, now chambered in the highly efficient 6MM ARC. Designed to provide flat trajectories, reduced recoil, and exceptional energy...

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MK114 MOD 1-M Upper .223 Wylde (NO COMPENSATOR)

The MK114 MOD 1-M Upper is equipped with the renowned PWS PWS long-stroke piston system, maintaining the reliability that PWS owners have come to trust. This line features a free-float MLOK...

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$1,299.95

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1/2x28 Piston

The PWS Suppressor Piston is meticulously crafted with 17-4 stainless steel to guarantee extensive durability and a prolonged life expectancy. Designed with versatility in...

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$87.95

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Enhanced Buffer Tube with Ratchet Lock Castlenut and Endplate

(6)

Introducing the PWS Enhanced Buffer Tube with Ratchet Lock Castle Nut & Endplate—engineered for superior reliability, durability, and ease of installation. Weighing just 4.3 oz, this buffer...

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$109.95

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