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Primary Weapons Systems MK114 PISTON-DRIVEN RIFLE

Contact Gurney
Model: PWSMK114556
Condition: Factory New
Bud's Item Number: 411545928

*Please Note!! Many of our pictures are stock photos provided to us by the manufacturer and do not necessarily represent the actual item being purchased. Please verify this picture accurately reflects the product described by the title and description on this page before you place your order.



5.56 X 45MM  (.223)

The MK1 series, developed by Primary Weapons Systems, is a significant product improvement for the M4/M16-type carbines and rifles. Utilizing our proven long stroke piston system, the MK1 series greatly reduces fouling in the action of the weapon making it as reliable as the AK47 that it was designed after.

The MK1 series has been used in Iraq and Afghanistan, and has gained wide popularity with security personnel, law enforcement and civilians alike.
The origins of the MK1 series began with the fascination in the simplicity and reliability of the AK47 combined with a deep-rooted appreciation for the ergonomics of the M4/M16 platform. Having a significant understanding of the deficiencies in the direct gas impingement operating system found on conventional M4/M16-style weapons, PWS developed the MK1 series with the professional in mind.
Significant improvements have been made over both the direct gas impingement operating system and previous offerings of piston-driven operating systems. The product improvements made by PWS have addressed reliability and performance issues as well as reduced carrier tilt, cam pin wear and carrier bounce. In addition, we have one of the lightest systems on the market today!
An innovative hand guard system utilizes a proprietary non-free float system that allows the end user or unit armorer to replace individual rails as needed without removing the barrel, barrel nut or even other rails. This system allows the user to attach numerous Picatinny rail-mounted devices such as sights, lights, and laser aiming devices.
The PWS proprietary operating system utilizes an operating rod that is attached to the carrier and a floating head piston that is attached to the operating rod. The MK1 series is built to be a true combat carbine. With no unnecessary gas adjustments and only one moving assembly, this is the most rugged, simple and versatile piston operating system available.
The MK114 features a pinned SM556 muzzle device that brings the overall length to 16.1" and is thus not considered a short barreled rifle.


5.56 NATO

6 lbs, 13 oz (3.09 kg)
Overall Length

31.2" (79.2 cm)
Barrel Length

16.1" w/permanent, pinned muzzle device
Barrel Specs

Stainless Steel, Isonite™ Treated, Button Rifled, 1:8 Twist Barrel
Muzzle Velocity

2920 ft/sec (XM193)
Muzzle Energy
1041 ft/lbs

Stainless Steel, Isonite™ Treated, Button Rifled, 1:8 Twist Barrel
Enhanced Charging Handle
PWS Mil Spec Upper and Lower Receiver
PWS Enhanced Bolt Carrier Group
Isonite™ Treated Internals
Magpul XT Rail Panels
Magpul MOE® stock and grip
Magpul MBUS® sights
Magpul PMAG 30
Pinned SM556
Action Semi-auto blowback
Caliber 460 Weatherby Mag
Barrel Length Not Valid
Overall Length 31.5" - 35.25"
Capacity 3 rd.
Stock A Grade Walnut
Action Semi-Automatic
Caliber 223 Remington/5.56 NATO
Barrel Length 16.1"
Overall Length 31.25"
Capacity 30 + 1
Stock Collapsible
Action Sidelock
Caliber 450 Marlin
Barrel Length 18 1/4"
Overall Length 48 1/8"
Capacity 40+ 1
Stock Folding/Collapsible
Action Pistol
Caliber 50 Browning Machine Gun (BMG)
Barrel Length 16 1/8"
Overall Length 33.62"
Capacity 5 plus 1
Stock Collapsible

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