Step up to serious energy with this .300 HAM’R 16" Upper featuring a Shaw barrel—built for shooters who want more punch, reliable cycling, and real-world performance. The 416R stainless steel barrel with a 1:12 twist is optimized for the .300 HAM’R platform, delivering excellent velocity, accuracy, and terminal performance.
The intermediate adjustable gas system allows you to fine-tune recoil and function, while the 13.5" M-LOK free-float handguard provides a lightweight, rigid platform for improved accuracy and accessory mounting. Finished with a Patriot Arms tactical muzzle brake, nitride BCG, and ambidextrous charging handle, this upper is built to run smooth and hit hard.
Performance Highlights:
.300 HAM’R Chambering – increased power over 5.56 platforms
16" 416R Stainless Shaw Barrel – precision and durability
1:12 Twist Rate (Button Rifled) – optimized for .300 HAM’R performance
Blackout Feed Ramps – reliable feeding
Adjustable Intermediate Gas System – smoother recoil & tunable cycling
13.5" M-LOK Handguard – free-float accuracy & modularity
Patriot Arms Tactical Muzzle Brake – reduced recoil, faster follow-ups
Nitride BCG – dependable, hard-use reliability
Ambidextrous Charging Handle – fast, versatile operation
Why This Upper Stands Out:
Hard-hitting performance with improved ballistics
Smooth, controllable recoil with adjustable gas system
Reliable feeding and cycling
Built for hunting, defense, and range performance
Ideal For:
Hunting and field use
Defensive rifle setups
Range and training applications
Shooters wanting more power than 5.56
2 Reviews Hide Reviews Show Reviews
-
300 HAM’R Upper
I couldn’t be happier with this Upper. The great price, the quality, the caring and personal customer service. Truly rare these days. I’d highly recommend Patriot Arms. I’d give the whole experience 10 stars if I could. Look forward to doing more business with them soon.
-
300 HAM'R Upper
since I purchased this upper last Feb i have had excellent results in shooting it and would highly recommend it to anyone waffling on whether or not to pull the trigger (duh) - it loves to print ace of clubs continuously at 100+ yards - thank you so very much - Jon Garner