Primary Weapons Systems MK1 Mod 2-M Complete AR-15 Lower Receiver - Magpul Furniture

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Primary Weapon Systems Primary Weapons Systems MK1 Mod 2-M Complete AR-15 Lower Receiver - Magpul Furniture - Lower Receiver for AR-15 - view 1
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Primary Weapon Systems

Overview

The Primary Weapons Systems MK1 Mod 2-M Complete AR-15 Lower Receiver is a fully assembled unit designed for builders looking for a reliable foundation for their AR-15 projects. Featuring ambidextrous controls, this lower receiver provides versatility and ease of use for both left- and right-handed shooters. This lower is commonly paired with builds utilizing the .223 Wylde caliber, making it a solid choice for those focused on precision and adaptability in their shooting experience.

Specifications

MPNMK1-M2-LWR-CR
PlatformAR-15
AssemblyComplete
ControlsAmbidextrous

Available Merchants(4)

Prices checked

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BattleHawk Armory logo
BattleHawk Armory
Shipping varies
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In Stock
$589.95
AT3 Tactical logo
AT3 Tactical
Shipping TBD
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In Stock
$629.95
Palmetto State Armory logo
Palmetto State Armory
Free shipping
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In Stock
$629.99
Brownells logo
Brownells
Free shipping
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Out of Stock
$629.95

October 2026 on GunPartPicker

Primary Weapons Systems MK1 Mod 2-M Complete AR-15 Lower Receiver - Magpul Furniture ranked #208 of the 588 lower receivers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #227 of the 1,222 lower receivers builders have added. Builds with this lower receiver are mostly chambered in 5.56 NATO (70%, then .223 Wylde 20%), mostly on mid-length gas (67%, then carbine-length 17%), and nearly all AR-15.

Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 3 of the 4 retailers we track have it in stock. Buying today, the lowest price is $589.95 at BattleHawk Armory, which matches the best price we saw in October.

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Frequently Built With

The part most often added in each category by the builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Caliber

70%
5.56 NATO70%
.223 Wylde20%
6mm ARC10%

Gas System

66.7%
Mid-Length66.7%
Carbine16.7%
Rifle16.7%

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