Primary Weapons Systems MK1 Complete Lower Receiver Kodiak Brown

The Primary Weapons Systems MK1 (PWS part no. 2M100RM141F) is a complete AR-pattern lower receiver finished in Kodiak Brown, built as the serialized foundation for a custom rifle or pistol build. PWS machines the MK1 to accept any standard AR-pattern upper regardless of chambering, letting builders pair it with whichever caliber and configuration suits the finished rifle. As a complete lower, it already includes the fire control group and furniture needed to fire, leaving only the upper assembly to finish the build.

Key Specifications

• Multi-caliber compatible, accepting any standard AR-pattern upper receiver.
• Sold as a complete lower receiver, including the fire control group and furniture.
• Finished in Kodiak Brown Cerakote for a distinctive, durable exterior.
• Semi-automatic fire control group is installed and ready to fire once an upper is mated.

Frequently Asked Questions

Is this a stripped or complete lower receiver? It is a complete lower, meaning the fire control group and furniture are already installed.

What uppers is this lower compatible with? Any standard AR-pattern upper, since the lower itself is multi-caliber compatible.

What finish does it come in? A Kodiak Brown Cerakote finish over the receiver.

Buy the Primary Weapons Systems MK1 Complete Lower Receiver Kodiak Brown

Order the PWS MK1 lower from our Primary Weapons Systems lineup of rifle lowers for fast, insured shipping to your FFL from our Lubbock, Texas gun shop.