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Questions & Answers
does this come with a full auto bcg? worthless to me if it doesn't Expert Answer

Primary Weapons Systems does not specify if the BCG included with the MK116 MOD1-M 16in bbl Upper Receiver is a full-auto BCG. I would recommend reaching out to them directly for more information. You can find their contact info linked below:
https://www.primaryweapons.com/contactus/

by Ethan, Gear Expert, March 29, 2022
Is the muzzle device pinned/welded on this specific product? Manufacturer Answer

The muzzle device on the Mk116 Mod 1 upper is not pinned and welded

by Primary Weapons Systems, Manufacturer, October 18, 2023
Customer Reviews
Helpful Positive Review PWS makes some of the best uppers by Mo Guns, Verified Owner, May 13, 2021
If you don't own a piston upper you really should. It shoots so much cleaner and the recoil impulse is nice. Plus PWS you have adjustable gas block, comes with charging handle and BCG, really pretty great deal for the times.
2/2 found this helpful
Helpful Negative Review Its ok, not great by John, April 10, 2022
For the price its overrated. I got one to run with an Omega 36m. I have no idea where the "clean running" version is, i didn't get it. I get every bit as much gas in the face on any setting as any of my gas guns. Again its accurate, heavier, and the ...
Read More...
2/20 found this helpful
Most Recent Reviews amazing upper reciver by RVO, Verified Owner, July 17, 2024
Used it for my first build. Very satisfied with the small recoil, although does run hot after 3-4 mags and also on the heavier side.
Most Recent Reviews PWS MK116 Upper by Brayden Stock, Verified Owner, May 24, 2024
Great product. Mounted it to a PSA Sabre lower with a geiselle SSA trigger and B5 furniture. The fitment is fantastic. But it shoots even better. Does not seem to weigh anymore than any of the DI guns I've owned and it shoots significantly better
Read All 4 Reviews
Caliber: .223 Wylde Barrel Length: 16 inMuzzle Device: FSC 556 Finish: Matte Color: Black Additional Features: 3-Setting Adjustable Gas System Condition: New

Code: 2D5-URC-RG34D-MK1-M1U-223-16

MPN: MK1-M1U-223-16

UPC: 811154033499

List: $1,129.95Save $80.00
$1,049.95

Product Info for Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver

If you're looking for versatility while shopping for AR15 Upper Receivers, you need the Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver. As a rifle-length upper receiver, it is effective at short-, medium-, and even slightly long-range engagements. Since it is chambered in .223 Wylde, it is rated for the high-pressure of 5.56x45mm, as well as .223 Remington, giving you plenty of ammo options to choose from. Plus, unlike AR 15 pistols, there are no restrictions on the attachments you can put on it. You have full control over the stock, foregrip, optic, and everything else, and the MK116 MOD1-M comes with Picatinny rails and M-LOK attachment points to make this easy. This upper receiver also comes with a 3-setting adjustable gas block for finetuning and an FSC 556 flash hider to reduce your muzzle exposure. Pick one up today to complete your build and get to the range!image

WARNING: California`s Proposition 65

Specifications for Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver:

Manufacturer: Primary Weapons Systems
Caliber: .223 Wylde
Barrel Length: 16 in
Muzzle Device: FSC 556
Finish: Matte
Color: Black
Additional Features: 3-Setting Adjustable Gas System
Condition: New
Magazine Included: No

Features of Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver:

  • 16-inch Barrel
  • 3-setting Adjustable Gas System
  • Matte Black Finish
  • Chambered in .223 Wylde
  • FSC 556 Muzzle Device
  • Picatinny Rails

Package Contents:

  • Primary Weapons Systems MK116 MOD1-M 16in bbl Upper Receiver

Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver Orderable Models

List of Orderable Models

Primary Weapons Systems MK116 MOD1-M Upper Receiver, 16 inch Barrel, .223 Wylde, 3-Setting Adjustable Gas System, FSC556 Compensator, Matte, Black, MK1-M1U-223-16 , MPN: MK1-M1U-223-16 , UPC: 811154033499 , Code: 2D5-URC-RG34D-MK1-M1U-223-16

Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

Primary Weapons Systems MK116 MOD1-M Upper Receiver, 16in bbl, .300BLK, Non Adjustable Gas System, Triad 30 Compemsator, Black, 18-M116UB0B , MPN: 18-M116UB0B , UPC: 811154030405 , Code: 2D5-URC-RG34D-18-M116UB0B
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