Primary Weapons Systems121687978
PWS MK114 MOD 2-M UPPER 223 WYLDE 14.5$1,299.95
Availability: In Stock
Current Stock: Out of stock
The Primary Weapons Systems MK114 Mod 2-M is a complete .223 Wylde upper receiver built for shooters who demand reliability and modularity. With a 14.5" barrel and PWS's proven long-stroke piston system, this upper delivers consistent performance whether you're running precision drills at the range, training for defensive scenarios, or building a versatile AR-pattern rifle. The .223 Wylde chamber accommodates both .223 Remington and 5.56 NATO ammunition, giving you flexibility in ammo selection without compromising accuracy.
At the heart of this upper is PWS's proprietary piston operating system—a mid-length gas setup with three adjustable positions so you can tune the gun to your specific load and preference. The 41V50 steel barrel is rifled 1:8 twist, a versatile rate that handles everything from lighter varmint rounds to heavier tactical loads. The upper receiver itself is machined from 7075-T651 aluminum and hard-coat anodized to MIL-A-8625 Type III Class 2 standards—meaning it'll stand up to hard use without the finish breaking down.
The 13.574" PWS PicLok handguard gives you plenty of real estate for optics, lights, and accessories, with a compact 1.7" width and 2.25" height that keep the rifle lightweight and handy. Rounding out the package is an ambidextrous Radian Raptor charging handle, a proven design that works smooth and fast from either shoulder. The upper ships with a PWS FSC 556 flash suppressor pinned and welded to comply with local regulations, though that can be addressed at your local gunsmith if needed.
This is the kind of upper you grab when you want to build something that runs, fights, and lasts—no marketing fluff, just a solid piston system and thoughtful engineering.
| Caliber | .223 Wylde |
| Barrel Length | 14.5" |
| Barrel Material | 41V50 Steel |
| Barrel Twist | 1:8 |
| Operating System | PWS Long-Stroke Piston (Mid-Length) |
| Gas Adjustment | 3-Position Adjustable |
| Upper Receiver Material | 7075-T651 Aluminum |
| Finish | Hard-Coat Anodize, MIL-A-8625 Type III Class 2 |
| Handguard | PWS PicLok, 13.574" length |
| Handguard Dimensions | 1.7" width, 2.25" height |
| Charging Handle | Radian Raptor Ambidextrous |
| Muzzle Device | PWS FSC 556 (Pinned & Welded) |
| Muzzle Velocity | 2921 fps |
The .223 Wylde chamber is designed to safely and accurately fire both .223 Remington and 5.56 NATO ammunition. This flexibility lets you choose ammo based on availability and pricing without having to swap uppers.
Piston systems like PWS's long-stroke design are often preferred for reliability in adverse conditions, easier cleaning, and cooler operation. The 3-position adjustable gas block on this upper lets you tune the system for your specific ammunition and shooting conditions—a feature direct-impingement guns don't offer.
The FSC 556 flash suppressor comes pinned and welded to the barrel. Any changes to the muzzle device require a gunsmith and must comply with local and federal regulations.
Yes—this is a complete PWS upper receiver that will mate with any standard AR-15 pattern lower receiver.
SKU: 167528999 • Weight: 5.1oz
Availability: In Stock
Current Stock: Out of stock
The Primary Weapons Systems MK114 Mod 2-M is a complete .223 Wylde upper receiver built for shooters who demand reliability and modularity. With a 14.5" barrel and PWS's proven long-stroke piston system, this upper delivers consistent performance whether you're running precision drills at the range, training for defensive scenarios, or building a versatile AR-pattern rifle. The .223 Wylde chamber accommodates both .223 Remington and 5.56 NATO ammunition, giving you flexibility in ammo selection without compromising accuracy.
At the heart of this upper is PWS's proprietary piston operating system—a mid-length gas setup with three adjustable positions so you can tune the gun to your specific load and preference. The 41V50 steel barrel is rifled 1:8 twist, a versatile rate that handles everything from lighter varmint rounds to heavier tactical loads. The upper receiver itself is machined from 7075-T651 aluminum and hard-coat anodized to MIL-A-8625 Type III Class 2 standards—meaning it'll stand up to hard use without the finish breaking down.
The 13.574" PWS PicLok handguard gives you plenty of real estate for optics, lights, and accessories, with a compact 1.7" width and 2.25" height that keep the rifle lightweight and handy. Rounding out the package is an ambidextrous Radian Raptor charging handle, a proven design that works smooth and fast from either shoulder. The upper ships with a PWS FSC 556 flash suppressor pinned and welded to comply with local regulations, though that can be addressed at your local gunsmith if needed.
This is the kind of upper you grab when you want to build something that runs, fights, and lasts—no marketing fluff, just a solid piston system and thoughtful engineering.
| Caliber | .223 Wylde |
| Barrel Length | 14.5" |
| Barrel Material | 41V50 Steel |
| Barrel Twist | 1:8 |
| Operating System | PWS Long-Stroke Piston (Mid-Length) |
| Gas Adjustment | 3-Position Adjustable |
| Upper Receiver Material | 7075-T651 Aluminum |
| Finish | Hard-Coat Anodize, MIL-A-8625 Type III Class 2 |
| Handguard | PWS PicLok, 13.574" length |
| Handguard Dimensions | 1.7" width, 2.25" height |
| Charging Handle | Radian Raptor Ambidextrous |
| Muzzle Device | PWS FSC 556 (Pinned & Welded) |
| Muzzle Velocity | 2921 fps |
The .223 Wylde chamber is designed to safely and accurately fire both .223 Remington and 5.56 NATO ammunition. This flexibility lets you choose ammo based on availability and pricing without having to swap uppers.
Piston systems like PWS's long-stroke design are often preferred for reliability in adverse conditions, easier cleaning, and cooler operation. The 3-position adjustable gas block on this upper lets you tune the system for your specific ammunition and shooting conditions—a feature direct-impingement guns don't offer.
The FSC 556 flash suppressor comes pinned and welded to the barrel. Any changes to the muzzle device require a gunsmith and must comply with local and federal regulations.
Yes—this is a complete PWS upper receiver that will mate with any standard AR-15 pattern lower receiver.
SKU: 167528999 • Weight: 5.1oz