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Primary Weapons Systems 11.85" 5.56/.223 WYLDE MK111 MOD 1-M Upper PWS Complete Receiver
Primary Weapons Systems 11.85' 5.56/.223 WYLDE MK111 MOD 1-M Upper PWS Complete Receiver

Primary Weapons Systems 11.85" 5.56/.223 WYLDE MK111 MOD 1-M Upper PWS Complete Receiver

Part Number:18M111UA0B
On sale: $1,029.95
Retail Price:$1,049.95
You Save:$20.00(2%)
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Primary Weapons Systems 11.85" 5.56/.223 WYLDE MK111 MOD 1-M Upper PWS Complete Receiver

NOTE: THIS IS THE COMPLETE UPPER (BCG AND AMBIDEXTROUS CHARGING HANDLE INCLUDED). No lower or sights included. May be shipped to your door, no FFL required. BUILD AS A REGISTERED SBR OR DESIGNATED PISTOL WITH BRACE.   Be aware of your LOCAL, STATE, and FEDERAL LAWS before ordering. Not for sale to HI.

The PWS MK1 MOD 1-M line of upper receivers feature the PWS long stroke piston system. Internally, this line offers the tried and true system that PWS owners have grown to know and love. Featuring a free-float MLOK handguard, forward assist controls, and a more true to mil-spec design, the MK1 MOD 1-M line is a go-to for not only civilians, but also Law Enforcement. With the fully forged upper, the MK1 MOD 1-M is a no-nonsense tool for when you need a high value option that is relentless and unstoppable.


The shortest available option in the MK1 MOD 1-M series, the MK107 is based off of the first firearm developed by PWS. Known as “The Diablo”, the MK107 was designed to replace MP5 style weapons. Used heavily in law enforcement and SWAT settings, the MK107 has been a vital part in the growing use of SBRs as patrol rifles. The MK107 upper receiver has a 7.75” barrel and Triad556 Compensator.


The MK111 MOD 1-M is perfect for shooters looking for a weapon with endless uses. Maintaining the shortest barrel length recommended for suppressed use, this compact upper receiver is one of the most popular from LE to heli-hunting. The MK111 upper receiver has an 11.85” barrel and a Triad556 Compensator.


The MK114 MOD 1-M, developed after the M4 pattern, is the go-to item for shooters wanting a compact rifle without the NFA paperwork. Having a pinned muzzle device, the MK114 MOD 1-M has been described as the ideal straight out of the box rifle for the average customer. The MK114 upper receiver has a 14.5” barrel with a FCS 556 Compensator.


The MK116 MOD 1-M upper receiver comes from one of the most popular firearms PWS manufactures. Being a go-to for Law Enforcement communities looking for non-NFA items, this rifle can be seen in-use by over 85 LE communities in the United States. The MK116 upper receiver has a 16.1” barrel with a FCS 556 Compensator.


Long stroke piston system

M-LOK handguards

Includes Radian Raptor Charging Handle

3-setting adjustable gas system

1:8 barrel twist rate

With the fully forged upper, the MK1 MOD 1-M is a no-nonsense tool for when you need a high value option that is relentless and unstoppable.

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