MPN: M109UB0B / 2M109UB0B
FEATURES:
- PWS long-stroke piston system combines the agility of the AR-15 with the reliability of the AK-47 with a sleek and efficient design
- Continuous Picatinny top rail
- 3 adjustable gas settings
- Free Float M-LOK system w/ PicMod Technology in MOD 2 models – The new technology allows you to mount M-LOK attachments anywhere on your handguard and mount Picatinny accessories directly to the recessed Picatinny rail section at the end of the handguard
- Lightweight forged upper in MOD 2 models – No forward assist and material removed from less structurally important location for weight reduction
- Increased carrier mass to extend dwell time and delay unlock
- Lithium Embedded Salt Nitro-Carburized (FNC LIFE HD) coated barrel and bolt carrier for durability, corrosion resistance and to reduce friction
*This upper receiver assembly has a barrel that is shorter than 16″. This upper is only for use on AR pistol lower receivers and NFA-registered Short-Barreled Rifle (SBR) lower receivers. All NFA laws apply!
SPECIFICATIONS:
- Caliber: 300 Blackout
- Finish: Type III Class 2 Hardcoat Anodized Finish
- Upper Receiver:
- MK1 MOD 1-M Forged Flat Top Upper – Made From 7075-T6 Aluminum
- MK1 MOD 2-M Forged Lightweight Flat Top Upper (No Forward Assist) – Made from 7075-T6 Aluminum
- Handguard:
- MK1 MOD 1-M: 8.9-inch M-LOK Rail System – Made From 6061-T6 Aluminum
- MK1 MOD 2-M: 8.9-inch M-LOK Rail System with PicMod Technology – Made From 6061-T6 Aluminum
- M4 Feed Ramps: Yes
- Muzzle Device: PWS Triad 30 Flash Suppressor
- Barrel: 9.75” 1:8 Twist Modify Low-Stress Profile 300 Blackout 41V50 CMV Barrel with FN HD Life Treatment
- Muzzle Thread Pattern: 5/8″-24
- Gas Block: PWS Long Stroke Piston System – 3-Position Adjustable Gas Block
- Gas Length: Pistol-Length
- Bolt Carrier Group: PWS Long Stroke Piston Bolt Carrier Group
- Charging Handle: Radian Raptor-LT Ambi Charging Handle
- Weight:
- MK1 MOD 1-P: ~3 lbs. 10 oz.
- MK1 MOD 2: ~3 lbs. 8 oz.
- Overall Length: ~18.75”
COMPATIBILITY:
- Any Mil-Spec AR-15 lower receiver
INCLUDES:
- 1x PWS MK191 Piston Upper with .300 Blackout Barrel
- 1X PWS Rifle Service Tool
DETAILS:
In the PWS MK109 .300 Blackout Piston Upper, Primary Weapons Systems offers a high-quality long stroke piston system with an 9.75-inch 416R stainless steel barrel chambered in 300BLK. This compact .300 Blackout upper still functions well under suppression and has been field-proven by many operators in real-world situations, even at distances as far as 300 meters. The MK109 is a variation of the Primary Weapons System MK1 long piston upper system.
