Primary Weapons Systems MK111 PRO Complete AR-15 Upper .223 Wylde Gas Piston - 11.85"
Details
Details
The Primary Weapon Systems MK111 PRO Complete AR-15 Upper .223 Wylde Gas Piston - 11.85" is the ultimate solution for AR pistol or SBR builds that stand out from the crowd. This complete upper receiver from Primary Weapon Systems features a 3-position adjustable long stroke gas piston system, guaranteeing exceptional reliability and smooth operation.
Easily accessible through the free float M-LOK handguard, the gas block adjustment switch allows for quick customization with picatinny rails or M-LOK accessories. The 11.85" barrel is precision machined from 416R stainless steel and is chambered in .223 Wylde, ensuring impressive accuracy potential. It boasts a button rifled configuration with a 1:8 twist rate and includes an effective A2 flash hider.
The proprietary upper receiver is forged from 6061 aluminum, offering a sleek and streamlined design. It features an M4 flat top Picatinny rail for easy optic mounting. Despite using a proprietary upper and bolt carrier group, compatibility is maintained with standard AR-15 charging handles such as the ambidextrous Radian Raptor.
Features:
- 3-position, adjustable long stroke gas piston system
- Mid-Length piston system design
- 11.85" barrel chambered in .223 Wylde
- 416R stainless steel construction with Nitride finish
- A2 Flash Hider for effective muzzle control
- Button rifled barrel with a 1:8 twist rate
- Proprietary slick side upper receiver and BCG
- Forged 6061-T6 aluminum construction
- Compatible with standard AR-15 charging handles like the ambidextrous Radian Raptor
- 11" M-LOK free float handguard
Specifications
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.
Ratings & Reviews
2 reviews
Love it
by Samuel -
I love this upper. It makes a mean AR-15 pistol. Very accurate and very smooth. It gets hot fast, that the only mildly negative thing I have to say about it. The adjustable gas block is fantastic and easy to use. The Radian charging handle is a great feature. The long-stroke piston gives a little more recoil than the DI style, but it's nothing to write home about. All around this is my favorite upper receiver.
Favorite Upper for my SilencerCo Chimera
by Justin -
Love this little guy, don't use it as much since the ATF outlawed a piece of plastic! BUt liked it a lot and may SBR it just to keep using it. Nice piston system.