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PWS MK112 MOD1 AR-15 Upper, .223 Wylde (5.56), 12"

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Availability: In stock


Quick Overview

Developed at the request of those in the SOCOM community, the PWS MK112 Upper has quickly become a favorite for law enforcement agencies as well. The MK112 retains lethal capability out to 400 meters with varying types of ammunition.

PWS MK112 MOD1 AR-15 Upper, .223 Wylde (5.56), 12

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  • PWS MK112 MOD1 AR-15 Upper, .223 Wylde (5.56), 12"


Using the proven system originally designed for the MK107, the MK112 uses a mid length gas piston system and a Wydle chamber that allows it to easily fire both 5.56 and .223 ammunition with no change in accuracy. The operating system, designed after the venerable AK-47, features a long stroke fixed operating rod design with an adjustable gas block, 15” handguard and free-floated barrel.

The handguard features the VLTOR KeyMod System which comes standard with two 2” sections of 1913 rail as well as a continuous 1913 top rail.

PWS Forged Mil-Spec Upper
PWS Stainless Isonite Treated 1:8 Twist Barrel
PWS Enhanced Bolt Carrier Group
PWS KeyMod Rail System

Additional Information

Caliber .223 / 5.56
Manufacturer Primary Weapons Systems
Barrel Length (in) 12"
Rifling 1 in 8"
Accessory Rail Yes
Additional Info All NFA Rules Apply. Mounting this on a rifle lower will create a short barrel rifle. It is fine to use on a pistol lower.

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