+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Primary Weapons Systems MK116 PRO 16 inch Upper Receiver PM116UA01-1F

Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F
Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F
Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F
Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F
1 of 3 images
Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F
Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F
2 of 3 images
Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F
Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F
3 of 3 images
Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
This upper is listed as having a .223 wilde chamber. Will this upper also handle 5.56 NATO rounds? Expert Answer

Yes, you can shoot 5.56 out of these Primary Weapons Systems MK116 Pro 16in bbl Upper Receiver chambered for .223 Wylde.

by Hunter, Gear Expert, March 9, 2022
See 1 More Answer
Is the flash hider pinned and welded? Manufacturer Answer

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

by Primary Weapons Systems, Manufacturer, October 18, 2023
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Great Upper by AlbertW, Verified Owner, July 16, 2020
It works flawlessly right out of the box. Attached it to my lower I built on my own. Good length and balance. I added some attachments. I added a M-LOK QD Swivel mounts so i can use 2 Point Rifle Sling, Magpul backup sights, and the Burris TAC30 ...
Read More...
9/9 found this helpful
Most Recent Reviews
Nice, but not as nice as I'd hoped by Joel, Verified Owner, November 1, 2023
I paired this upper with a PWS complete lower I bought used locally. Took it to the range and shot 150 rds - had one stovepipe at about the 90-95 round count. No other malfunctions or problems. The reason for 4 stars is it wasn't as smooth as I ha...
Read More...
0/1 found this helpful
Read All 2 Reviews

Product Discontinued by Manufacturer

Primary Weapons Systems MK116 PRO 16 inch Upper Receiver has been discontinued by Primary Weapons Systems and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Receivers yourself to try and find the perfect replacement for you!

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for Primary Weapons Systems MK116 PRO 16 inch Upper Receiver

Get the most out of 5.56mm NATO and .223 Remington with the Primary Weapons Systems MK116 PRO UPPER .223 WYLDE Receiver! These AR15 Upper Receivers will give you the AR15 carbine build you've been dreaming of. This complete upper includes all kinds of proprietary extras like the PWS Long Stroke Piston System and PWS Piston Upper. The PWS M-Lok 15" handguard allows you to add any lights or attachments your heart desires. Now's the time, go Wylde!image

Features of Primary Weapons Systems MK116 PRO 16in bbl Upper Receiver:

  • Operating System: PWS Long Stroke Piston System, 3-setting Adjustable Gas Regulator
  • Caliber: .223 Wylde
  • Barrel Length: 16.1"
  • Gas System Length: Mid-Length
  • Barrel Twist Rate: 1:8
  • Muzzle Velocity: 2980 fps
  • Muzzle Device: A2 Flash Hider
  • Upper Receiver: PWS Proprietary Piston Upper, 6061 extrusion, Anodized
  • Handguard: PWS M-Lok™ 15" Handguard (1.7" width, 2.25" height)
  • Charging Handle: Radian Raptor™ Ambidextrous Charging Handle

Package Contents:

  • Primary Weapons Systems MK116 PRO 16in bbl Upper Receiver

Related Products to Primary Weapons Systems MK116 PRO 16 inch Upper Receiver

Image of Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver (6) List: $1,499.95 (Save $100.00) $1,399.95 Best Rated
Image of Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver (6) List: $1,499.95 (Save $100.00) $1,399.95 Best Rated
Image of Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver (6) List: $1,499.95 (Save $100.00) $1,399.95 Best Rated
Image of Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver Primary Weapons Systems MK111 MOD2-M, .223 Wylde, 11.85 in Upper Receiver (6) List: $1,499.95 (Save $100.00) $1,399.95 Best Rated
Image of Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver (7) List: $1,499.95 (Save $100.00) $1,399.95 14% Coupon
Image of Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver (7) List: $1,499.95 (Save $100.00) $1,399.95 14% Coupon
Image of Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver (7) List: $1,499.95 (Save $100.00) $1,399.95 14% Coupon
Image of Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver Primary Weapons Systems MK116 MOD 2-M, .223, 16in Upper Receiver (7) List: $1,499.95 (Save $100.00) $1,399.95 14% Coupon
Image of Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver (7) List: $1,209.95 (Save $80.00) $1,129.95 Best Rated
Image of Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver (7) List: $1,209.95 (Save $80.00) $1,129.95 Best Rated
Image of Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver (7) List: $1,209.95 (Save $80.00) $1,129.95 Best Rated
Image of Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver Primary Weapons Systems MK111 MOD1-M .223 Wylde, 11.85in bbl Upper Receiver (7) List: $1,209.95 (Save $80.00) $1,129.95 Best Rated
Image of Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver (5) List: $1,499.95 (Save $100.00) $1,399.95
Image of Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver (5) List: $1,499.95 (Save $100.00) $1,399.95
Image of Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver (5) List: $1,499.95 (Save $100.00) $1,399.95
Image of Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver (5) List: $1,499.95 (Save $100.00) $1,399.95
Image of Primary Weapons Systems MK114 MOD 2-M, .223 Wylde, 14.5in Upper Receiver 2 models Primary Weapons Systems MK114 MOD 2-M, .223 Wylde, 14.5in Upper Receiver (2) List: $1,499.95 (Save $100.00) $1,399.95
Image of Primary Weapons Systems MK114 MOD 2-M, .223 Wylde, 14.5in Upper Receiver 2 models Primary Weapons Systems MK114 MOD 2-M, .223 Wylde, 14.5in Upper Receiver (2) List: $1,499.95 (Save $100.00) $1,399.95
Image of Primary Weapons Systems MK114 MOD 2-M, .223 Wylde, 14.5in Upper Receiver 2 models Primary Weapons Systems MK114 MOD 2-M, .223 Wylde, 14.5in Upper Receiver (2) List: $1,499.95 (Save $100.00) $1,399.95
Image of Primary Weapons Systems MK114 MOD 2-M, .223 Wylde, 14.5in Upper Receiver 2 models Primary Weapons Systems MK114 MOD 2-M, .223 Wylde, 14.5in Upper Receiver (2) List: $1,499.95 (Save $100.00) $1,399.95
Image of Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver (4) List: $1,209.95 (Save $80.00) $1,129.95 14% Coupon
Image of Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver (4) List: $1,209.95 (Save $80.00) $1,129.95 14% Coupon
Image of Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver (4) List: $1,209.95 (Save $80.00) $1,129.95 14% Coupon
Image of Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver Primary Weapons Systems MK116 MOD1-M 16 inch .223 Wylde Upper Receiver (4) List: $1,209.95 (Save $80.00) $1,129.95 14% Coupon

Primary Weapons Systems MK116 PRO 16 inch Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

  • Primary Weapons Systems MK116 PRO Upper Receiver, 16 inch Barrel, Matte, Black, PM116UA01-1F , MPN: PM116UA01-1F , UPC: 811154030955 , Code: 2D5-URC-RG37D-PM116UA01-1F
Compare (0)
1 item has been added
Add at least two items to compare
Last updated 2026-07-07 UTC.