MPA 416R Precision Stainless | AR-10 .308 20" Complete Rifle | Spiral Fluted Mid Weight Barrel
416R stainless. AR-10 power, precision barrel.
The MPA 416R in .308 brings the stopping power of the AR-10 platform with a 20" spiral fluted mid-weight barrel in 416R stainless — built for shooters who need more reach and more energy downrange.
Why it's different
Platform
AR-10 .308
Significantly more energy downrange than AR-15 calibers — built for hunting, long-range precision, and hard use.
Barrel material
416R stainless
Superior corrosion resistance and machinability over standard barrel steel.
Barrel profile
Spiral fluted mid weight
Balances weight and rigidity on a 20" barrel — reduces mass without sacrificing barrel harmonics.
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
Critical on a .308 — redirects propellant gases to significantly reduce the heavier recoil impulse, keeping the barrel flatter for faster follow-up shots.
.308 Winchester chamber
One of the most versatile precision calibers available — widely supported, with factory match ammo from every major manufacturer. Delivers serious energy past 800 yards.
1:10 twist rate
Optimized for the full range of .308 projectiles — stabilizes standard 147gr to 175gr match bullets for consistent long-range performance.
Built for
What's in the box
MPA 416R complete rifle
Function tested, ready to shoot
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-1073 |
|---|---|
| Hand Guard | MLOK Split Rail |
| Weight | 7.900000 |
| Manufacturer | Moore Precision Arms |
| Magazine Capacity | N/A |
| Barrel Length | 20 |
| Profile | Mid Weight |
| Twist | 1:10 |
| Barrel Finish | Stainless Steel |
| Material | 416R Stainless Steel |
| Caliber | .308 |
| Flutes | Spiral Flutes |
| Gas System | Rifle Length |
| Gas Block System | 0.750 |
| Charging Style | Rear Charging |
| Product Type | Rifle |
| Platform | AR-10 |
| Receiver Material | Forged |
| Choke Tubes | No |
| Action | Semi-Automatic |
| Brace | Not 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.