Primary Weapons Systems MK216 upper receiver in .308 Winchester with 16.1″ barrel. Precision-built for AR10/SR25 platforms to enable seamless caliber conversion and tactical versatility.
The Primary Weapons Systems MK216 upper receiver delivers reliable .308 Winchester performance in a 16.1″ format designed for AR10 and SR25 platforms. This conversion kit excels at enabling shooters to swap calibers while maintaining multi-platform compatibility. Whether you’re adding training capacity or expanding your rifle’s versatility, the MK216 brings PWS precision to your build.
Built for shooters who demand flexibility, the MK216 pairs a 16.1″ barrel with a FRC Comp muzzle device. This compact length suits tactical applications and shorter-range work. The matte black finish resists glare and corrosion. Additionally, the MK216 integrates seamlessly into existing AR10 and SR25 systems.
Key Features & Specifications
Chambered in .308 Winchester, the MK216 delivers the power and range that serious shooters expect. The 16.1″ barrel balances velocity with maneuverability. Furthermore, the included FRC Comp muzzle device aids recoil management and shot placement. The upper receiver construction reflects Primary Weapons Systems’ reputation for durability in field conditions.
The MK216 is ideal for shooters building or upgrading AR10-pattern rifles. Caliber conversion becomes straightforward with this bolt-on upper receiver. This approach cuts costs versus buying a complete rifle and maximizes your existing investment in a lower receiver.
Designed for Precision & Reliability
Primary Weapons Systems engineered the MK216 to perform in demanding environments. The matte finish provides a low-profile aesthetic while protecting against wear. Moreover, this upper receiver supports training drills, precision shooting, and tactical scenarios. It’s a smart choice for shooters who need a proven .308 platform without the premium price tag.
Available at Western Sport – Roanoke, TX
Western Sport is a licensed FFL/SOT dealer in Roanoke, TX, serving the North Texas and DFW area since 2007. We specialize in AR platform components and complete builds. Call 817-393-4000 to check availability, discuss your build, or place a special order.
Why Buy from Western Sport?
Licensed FFL/SOT dealer with 15+ years of North Texas service.
Expert staff knowledgeable in AR10, AR15, and precision rifle platforms.
Competitive pricing on Primary Weapons Systems and top-tier brands.
Fast, professional transfers and after-sale technical support.
Local expertise in caliber conversion, builds, and multi-platform setups.
Frequently Asked Questions
Q: Will the MK216 upper receiver fit my AR10 lower?
A: Yes. The Primary Weapons Systems MK216 is designed to fit standard AR10 and SR25 pattern lowers. Always verify your lower’s compatibility before purchase. Contact Western Sport at 817-393-4000 if you have questions about your specific platform.
Q: What warranty does Primary Weapons Systems offer?
A: PWS backs its products with a manufacturer’s warranty against defects in materials and workmanship. Details and terms are available on the PWS website or by contacting Western Sport. We handle warranty inquiries and support for all our customers.
Q: How is the transfer process handled in Texas?
A: As a licensed FFL/SOT dealer, Western Sport handles all federal and state transfer paperwork. Call 817-393-4000 to place an order and arrange your transfer. Our team will guide you through the process from start to finish.
Q: Is the MK216 good for training and caliber conversion?
A: Absolutely. The .308 Winchester caliber and 16.1″ barrel make the MK216 ideal for training, tactical work, and precision drills. It’s also a cost-effective way to add a .308 conversion to an existing AR10 lower receiver platform.
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