Primary Weapons Systems MK114 Mod 1-M Features
The MK114 Mod 1-M Upper Receiver utilizes the PWS Long Stroke Piston System with a 3-setting adjustable gas regulator, providing enhanced reliability and reduced maintenance compared to traditional direct impingement systems. Constructed from T6 7075 forged aluminum, the upper receiver is built for strength and durability.
The 14.5″ barrel, chambered in .223 Wylde, offers a 1:8 twist rate, optimizing it for a wide range of bullet weights. With a muzzle velocity of 2921 fps, this upper receiver delivers superior performance. The PWS M-Lok 13.624″ handguard provides ample space for accessory mounting, combining a slim profile with robust construction. The handguard measures 1.7″ in width and 2.25″ in height, ensuring a comfortable and ergonomic grip. Additionally, the Radian Raptor Ambidextrous Charging Handle offers ease of use for both right- and left-handed shooters.
Primary Weapons Systems MK114 Mod 1-M Specifications
- Brand: Primary Weapons Systems
- Model: MK114 Mod 1-M Upper Receiver
- Caliber: .223 Wylde
- Barrel Length: 14.5″
- Gas System Length: Mid-Length
- Barrel Twist Rate: 1:8
- Muzzle Velocity: 2921 fps
- Muzzle Device: No muzzle device included (All NFA rules apply)
- Operating System: PWS Long Stroke Piston System with 3-Setting Adjustable Gas Regulator
- Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized
- Handguard: PWS M-Lok 13.624″ Handguard (1.7″ width, 2.25″ height)
- Finish: Anodized Black
- Charging Handle: Radian Raptor Ambidextrous Charging Handle
- Compatibility: Fits AR-15
| Barrel Length | 14.5 |
|---|---|
| Caliber | .223 Wylde |
| Condition | New in Box |
| Finish Per Color | Black |
| Manufacturer | Primary Weapons Systems |
| Manufacturer Part Number | 18-M114UA0BNC |
| Model | MK114 Mod 1-M |
| Type | Uppers |
| UPC | 811154030375 |
Frequently Asked Questions About This Product
Why buy Primary Weapons Systems MK114 Mod 1-M .223 Wylde 14.5" Barrel from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Primary Weapons Systems MK114 Mod 1-M .223 Wylde 14.5" Barrel?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Primary Weapons Systems MK114 Mod 1-M .223 Wylde 14.5" Barrel available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: RIFLES, Uppers.
What tags or features does this product have?
Key features and tags for this product include: RIFLES, Uppers.
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for Primary Weapons Systems MK114 Mod 1-M .223 Wylde 14.5" Barrel
All firearms, including the Primary Weapons Systems MK114 Mod 1-M .223 Wylde 14.5" Barrel, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Primary Weapons Systems MK114 Mod 1-M .223 Wylde 14.5" Barrel is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
