The Primary Weapons Systems Mk216 Mod 2 upper receiver in .308 Winchester gives you a complete, ready-to-mount upper for AR10/SR25 platform rifles. Built by PWS—a brand known for precision engineering and reliability—this 16.1" upper is sized for practical rifle work: long enough to unlock the cartridge's potential downrange, short enough to stay handy in the field or at the range. Whether you're building a precision rifle, upgrading an existing lower, or assembling a dedicated .308 platform, the Mk216 Mod 2 delivers the foundation you need.
The included FRC (Adjustable Prismatic Compensator) muzzle device helps manage recoil and muzzle rise, giving you faster target reacquisition on follow-up shots—especially valuable in .308 Winchester where felt recoil demands respect. The matte finish resists glare and hides dust and wear better than polished surfaces, keeping your upper looking professional through seasons of use. This is a plug-and-play upper: pair it with any AR10/SR25-compatible lower to have a complete rifle.
PWS uppers are built to tight tolerances, which means consistent performance and longevity. Fit and finish matter when you're stacking precision, and PWS doesn't cut corners. If you're already familiar with the AR platform and want to move past assembly hassle, or if you demand the same quality and attention to detail at every stage of your build, this complete upper eliminates guesswork.
| Manufacturer | Primary Weapons Systems |
| Model | Mk216 Mod 2 |
| Caliber | .308 Winchester |
| Barrel Length | 16.1" |
| Muzzle Device | FRC (Adjustable Prismatic Compensator) |
| Platform Compatibility | AR10/SR25 |
| Finish | Matte Black |
| Upper Type | Complete Upper Receiver |
This upper is compatible with AR10/SR25 platform lower receivers. Make sure your lower is chambered in .308 Winchester and built to the same platform standard.
This is a complete upper receiver. You'll only need a compatible lower receiver to assemble a complete rifle; no additional upper parts are required.
The FRC (Adjustable Prismatic Compensator) is designed to reduce recoil and muzzle rise, helping you stay on target and recover faster between shots—especially useful in .308 Winchester where recoil is substantial.
The 16.1" barrel and .308 Winchester caliber are capable of precision work, though effective range and accuracy depend on your ammunition, optics, and shooter skill. The tight PWS tolerances support precision performance.
Primary Weapons Systems
Primary Weapons Systems
Primary Weapons Systems
