MPA 416R Precision Stainless | AR-15 .22 ARC 18" Complete Rifle | Spiral Fluted Heavy Barrel
416R stainless. Flat-shooting performance for the AR-15 platform.
The MPA 416R in .22 ARC delivers exceptional long-range performance from a standard AR-15. Featuring a 416R stainless spiral fluted barrel, it's designed for shooters seeking higher velocity, flatter trajectories, and consistent downrange performance.
Why it's different
Caliber
.22 ARC
Designed for higher ballistic performance with excellent velocity, flatter trajectories, and enhanced long-range capability.
Barrel material
416R stainless
Superior corrosion resistance and machinability over standard barrel steel.
Barrel profile
Spiral fluted heavy
Reduces weight while improving heat dissipation during sustained fire.
Key specs explained
3.5 lb single-stage trigger
No take-up before the sear — trigger movement starts with the pull that fires the shot. Crisp break, short tactile reset you can feel and hear. Housing machined from solid 6061 aluminum with S7 tool steel internals. Half the pull weight of mil-spec.
Muzzle brake
Redirects propellant gases to reduce recoil and muzzle rise — keeps the barrel flatter shot to shot for faster, more accurate follow-ups.
.22 ARC chamber
Engineered to maximize the performance of the .22 ARC cartridge, the 16" barrel delivers excellent velocity, flat trajectories, and consistent accuracy for extended-range shooting.
1:7 twist rate
Designed to stabilize heavier .22 caliber projectiles for improved consistency and long-range performance.
Built for
What's in the box
MPA 416R complete rifle
Function tested, ready to use
Adjustable stock
Pre-fitted to lower receiver
Muzzle brake
Installed and timed
3.5 lb single-stage trigger
S7 tool steel internals, installed with anti-walk pins
| SKU | MPA-1087 |
|---|---|
| Hand Guard | MLOK Split Rail |
| Weight | 7.900000 |
| Manufacturer | Moore Precision Arms |
| Magazine Capacity | 10 Round Magazine |
| Barrel Length | 18 |
| Profile | Heavy Barrel |
| Twist | 1:7 |
| Barrel Finish | Stainless Steel |
| Material | 416R Stainless Steel |
| Caliber | .22 ARC |
| Flutes | Spiral Flutes |
| Gas System | Rifle Length |
| Gas Block System | 0.750 |
| Charging Style | Rear Charging |
| Product Type | Rifle |
| Platform | AR-15 |
| Receiver Material | Forged |
| Choke Tubes | No |
| Action | Semi-Automatic |
| Brace | Not Included |
| Magazine | Magazine Included |
WARNING: This product can expose you to chemicals, such as lead and other petroleum products, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to the California P65 Warning site.