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PWS MK1 Mod 2-M 5.56 NATO Complete Lower Receiver


PWS MK1 Mod 2-M 5.56 NATO Complete Lower Receiver
PWS MK1 Mod 2-M 5.56 NATO Complete Lower Receiver PWS MK1 Mod 2-M 5.56 NATO Complete Lower Receiver (Image 2)
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Primary Weapons Systems was formed by firearm enthusiasts in 2008. Starting out by producing muzzle devices, we tested our compensators on all different types of rifles - from M4s to AK-47s. After using both styles of rifles in testing with high round counts, the difference in maintenance needed was both astounding. From that basic realization, the PWS long-stroke piston system was born; keeping the core values of the AR-15 design, while also lessening the need for maintenance in high-volume fire situations and adverse conditions. PWS ambidextrous MK1 MOD 2-M Multi-Caliber Lower, T6 7075 Forged, Anodized, AR-15 Compatible.

  • Ambidextrous Magazine Release
  • Ambidextrous Bolt Catch
  • Lightweight Design
  • Integrated Trigger Guard
  • Trigger: Mil-Spec Enhanced, PTFE Coated
  • Trigger Pull Weight: 5.5 6.5 lbs.
  • Buffer Tube: PWS Enhanced Buffer Tube with ratchet lock castle nut and end plate set with built-in QD mount
  • Buffer: PWS Enhanced H2 Steel Body Buffer
  • Furniture: Bravo Company USA Buttstock and Pistol Grip


$679.95
Our Price
$623.99
You Save: $55.96
Financing Available: as low as $86.39 / month
MFG: Primary Weapons Systems
Model: MK1M2LWRCR
Bud's Item Number: 163308
UPC: 811154033147
Retail Store Availability
In-Store Purchase Only
Lexington, KY Not in store
Greenville, KY Call for availability
Sevierville, TN Call for availability
4 Reviews

PWS MK1 Mod 2-M 5.56 NATO Complete Lower Receiver

Primary Weapons Systems was formed by firearm enthusiasts in 2008. Starting out by producing muzzle devices, we tested our compensators on all different types of rifles - from M4s to AK-47s. After using both styles of rifles in testing with high round counts, the difference in maintenance needed was both astounding. From that basic realization, the PWS long-stroke piston system was born; keeping the core values of the AR-15 design, while also lessening the need for maintenance in high-volume fire situations and adverse conditions. PWS ambidextrous MK1 MOD 2-M Multi-Caliber Lower, T6 7075 Forged, Anodized, AR-15 Compatible.

  • Ambidextrous Magazine Release
  • Ambidextrous Bolt Catch
  • Lightweight Design
  • Integrated Trigger Guard
  • Trigger: Mil-Spec Enhanced, PTFE Coated
  • Trigger Pull Weight: 5.5 6.5 lbs.
  • Buffer Tube: PWS Enhanced Buffer Tube with ratchet lock castle nut and end plate set with built-in QD mount
  • Buffer: PWS Enhanced H2 Steel Body Buffer
  • Furniture: Bravo Company USA Buttstock and Pistol Grip

4 Reviews. 5 out of 5 Stars!
5 Stars
100%
4 Stars
0%
3 Stars
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2 Stars
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1 Star
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Zachary F on 02/16/2026
Rating:   5 of 5 Stars!

Haven’t put an upper on it quite yet, but feels incredibly smooth and intuitive.

Curry W on 01/15/2026
Rating:   5 of 5 Stars!

Undoubtedly the best ambi lower got it for my 109 upper.

Braydan P on 09/10/2024
Rating:   5 of 5 Stars!

I'm in the process of building my first rifle and I love this lower. Fully ambidextrous and with upgraded furniture. It's fantastic.

Darreon H on 06/29/2024
Rating:   5 of 5 Stars!

This is easily the best lower I’ve used and I love the fitting on my DD upper it’s, perfect. Shipping was amazingly fast and got it a couple of days after my birthday, thank you BudsGunShop!!

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