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.

Handguards

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MK1 MOD 1-M M-LOK Replacement Rail- 114

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 will not work on DI uppers, and are proprietary to the...

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MK1 MOD 2-M PicLok Replacement Rail- 111

The MK1 MOD 2-M Replacement rail is for owners of PWS MK1 MOD 2 owners to replace their current PicMod rail with PicLok. Includes mounting hardware and instructions. Please note, these handguards will not work on DI uppers, and are proprietary to the...

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$174.95

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MK1 MOD 2-M PicLok Replacement Rail- 109

AS OF 4/1/2022, These DO have the cutout in the handguard for gas adjustment. If you need a replacement gas adjustment knob, please email warranty@primaryweapons.com with your mailing address. The MK1 MOD 2-M Replacement rail is for owners of PWS...

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MK1 MOD 2-M PicLok Replacement Rail- 114

The MK1 MOD 2-M Replacement rail is for owners of PWS MK1 MOD 2 owners to replace their current PicMod rail with PicLok. Includes mounting hardware and instructions. Please note, these handguards will not work on DI uppers, and are proprietary to the...

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$174.95

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MK2 MOD 1-M M-LOK Replacement Rail

The MK2 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 will not work on DI uppers, and are proprietary to the...

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MK1 MOD 2-M PicLok Replacement Rail- 107

The MK1 MOD 2-M Replacement rail is for owners of PWS MK1 MOD 2 owners to replace their current PicMod rail with PicLok. Includes mounting hardware and instructions. Please note, these handguards will not work on DI uppers, and are proprietary to the...

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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 will not work on DI uppers, and are proprietary to the...

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$149.95

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