PWS MK116 MOD 1-M .223 Wylde FRC Comp - Complete Upper - 16.1"

For AR-15 builders who want PWS's Long Stroke Piston System reliability and sub-MOA precision in a complete upper that pairs closely with mil-spec standards, the Primary Weapons Systems MK116 MOD 1-M delivers forged receivers, free-float M-LOK handguard, forward assist integration, and a 16.1" .223 Wylde barrel at 4.8 lbs.

The Primary Weapons Systems MK116 MOD 1-M is a complete upper receiver assembly designed for AR-15 owners and builders who want PWS's piston-driven reliability and precision barrel quality in a forged-receiver upper that closely follows mil-spec standards — complete with forward assist and compatible with standard mil-spec lower receivers.

The MOD 1-M upper uses fully forged 7075-T651 aluminum upper and lower receivers to mil-spec dimensions — a closer-to-standard approach than the MOD 2-M's billet ambidextrous receiver, designed to appeal to civilians and law enforcement who want PWS piston reliability within a more familiar, compatible receiver architecture. Forward assist integration provides the ability to manually push the bolt fully into battery in adverse conditions, adding a layer of reliability assurance for duty and field use. The 16.1" .223 Wylde barrel with 1:8 twist rate handles both .223 Remington and 5.56mm NATO with outstanding accuracy, and PWS backs this Boise-made barrel with their sub-MOA accuracy guarantee. The free-float M-LOK handguard improves handling and provides broad accessory mounting options, and the PWS FRC 2-Port Compensator with Rearden Atlas suppressor compatibility rounds out a feature-complete upper. The Radian Raptor ambidextrous charging handle ensures reliable operation for both right- and left-handed users.

Caliber: .223 Wylde (compatible with .223 Remington and 5.56mm NATO). Barrel: 16.1", 1:8 twist, sub-MOA guarantee. Gas system: PWS Long Stroke Piston with adjustable settings. Receiver: forged 7075-T651 aluminum. Handguard: free-float M-LOK. Charging handle: Radian Raptor ambidextrous. Muzzle: PWS FRC 2-Port Compensator (Rearden Atlas compatible). Weight: 4.8 lbs. Includes forward assist.

Forged 7075-T651 aluminum receivers to mil-spec dimensions ensure compatibility with standard lower receivers and components. The PWS Long Stroke Piston System reduces fouling in the upper receiver group for improved reliability across sustained fire and suppressed use.

An excellent complete upper for AR-15 builders who want PWS piston-driven reliability, sub-MOA precision, and forward assist integration in a mil-spec-compatible forged receiver upper for duty, law enforcement, or civilian use.

Backed by the PWS VOW — Primary Weapons Systems' warranty guaranteeing repair or replacement for any manufacturing defects. Precision manufactured in Boise, Idaho, USA.