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PWS MK1 Mod1 Gas Piston Upper Receiver M116UB0B, .300 Blackout, 16.1 in BBL, 12 in KeyMod Rail, Blk Finish, Pinned Triad30 Brake

Hinterland Item Number: 46583

Manufacturer Number: M116UB0B

Current Reviews: 0    (Write a review & get a $5 coupon)

Our Price: $1,399.95
Condition: New In Box

Estimated Lead Time:


Product Description

Embracing the proven concept of the .300 Whisper, the 300 BLK version of the PWS MK116 extends the capability of the platform by allowing the concurrent use of both subsonic and supersonic ammunition in the same platform even from the same magazine if the user so chooses. The MK116 retains lethal capability out to 500 meters with ammunition such as the PWS 110gr TAC-TX 300 BLK round.

Utilizing the proven system originally designed for the MK107, the MK116 uses a mid length gas piston system. The operating system, designed after the venerable AK-47, features a long stroke fixed operating rod design with an adjustable gas block, 12.4" 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.

Understanding the importance of an ultra-reliable package that is light as possible, mil-spec forgings are used for the upper and lower receiver. Additional features include the BCM GUNFIGHTER charging handle.


300 Blackout

4 lbs, 2 oz (1.87 kg)

25 (63.5 cm)

16 (40.6 cm)

2444 ft/sec (PWS110)

1459 ft/lbs


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


Primary Weapons Systems, Inc (PWS) is a Federally-licensed firearms manufacturer located in Boise, Idaho. PWS is the designer and manufacturer of the MK1 and MK2 series rifles and uppers in addition to a complete line of flash suppressing compensators such as the FSC556, SM556, FSC30, and more. PWS develops items based on real world requirements with the goal of redefining accuracy and performance in the piston-driven platforms.

All parts manufactured by PWS are done so on state of the art CNC Machines such as Okuma Multus B300 lathes, HAAS VF-4 mills and more. Any components that are not produced by PWS are purchased from only the best manufacturers to ensure the highest quality products are delivered to the end user.

Our CNC machines are programmed and operated by true craftsmen who are also shooters. It is this combination that enables us to provide our clients with the highest quality products that are not only aesthetically appealing, but also very functional

Please Note: This description may represent a general group of products. Please read the item's title and specifications for more specific information about this particular item.

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