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PWS MK111 MOD1 Upper 762X39
PWS MK111 MOD1 Upper 762X39
 
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MSRP: $1,299.00

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Product Code: MK1-M1U-762X39-11
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Description
 
Designed for use on milspec AR15 lowers, the Primary Weapons MK111 MOD1 upper in 762X39 features 11.85 inch 41V50 barrel, FRC compensator, MLOK handguard, PWS long-stroke piston system and adjustable gas block.

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Technical Specs
  • Caliber 762X39
  • Fits milspec AR15 lowers
  • DuraMag AR15 magazines recommended
  • 3lb 14oz weight
  • PWS 2-port FRC compensator
  • Compatible with Rearden suppressor mounts
  • 11.85 inch 41V50 FNC LIFE HD barrel
  • 1:10 twist threaded 5/8X24
  • 11 inch MLOK handguard
  • 3-position adjustable gas block
  • Carbine-length long-stroke piston system
  • FNC LIFE HD bolt carrier
  • Radian Raptor LT charging handle
  • Limited lifetime warranty

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 34  Write a review.

  0 of 0 people found the following review helpful:
 
5 of 5 Outstanding April 3, 2026
Reviewer: D. McIntyre from AL, USA  
Outstanding & friendly customer service with fast shipping!!!!!! Will definitely recommend to others.

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  0 of 0 people found the following review helpful:
 
5 of 5 One Happy Customer December 4, 2025
Reviewer: JC from CT, USA  
I stumbled across Fortress Tactical a few years ago, and I was a little hesitant to put my hard-earned money down with yet-another-internet-store. What if this was a scam? But over the years, I have been a repeat customer, and I am impressed with the products, delivery, responsiveness and overall customer service.  I plan on continuing to purchase more products in the future. I suspect this operation will continue to grow over the years.

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  0 of 0 people found the following review helpful:
 
5 of 5 PWS MOD1 Upper May 19, 2024
Reviewer: Customer from PA, USA  
I can’t even begin to describe how much Fortress goes above and beyond. Super communication, even long after business hours were over. The deal was the best price around as well!! I’m a customer for life, period.

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  0 of 0 people found the following review helpful:
 
5 of 5 Mk111 Upper May 13, 2024
Reviewer: Cameron from WI, USA  
Very fast shipping, upper came boxed extremely well and looked professional. I'm impressed with the process of this transaction. Upper functioned perfectly so far, and will run it more when I get my red dot and a lower setup for it. Very happy with purchase and buying from Fortress. Will be doing business with them again when I'm needing another upper. PWS makes great products!

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  0 of 0 people found the following review helpful:
 
5 of 5 Excellent Comms & CS February 4, 2023
Reviewer: G. Navarro from FL, USA  
Mike is a phenomenal business owner. Can’t stress it enough how much value he brings to the industry. URG arrived incredibly fast & well-packaged.

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