Windham Weaponry RMCS4 RMCS-4 Rifle Kit Semi-Automatic 223 Remington/300 AAC Blackout/7.62x39mm/9mm 6-Position Synthetic Black Stock Black Hardcoat Anodized/Black

Windham Weaponry's RMCS-4 kit offers four calibers in the same AR platform by simply changing out barrels, magazine wells, and if necessary, the bolt/bolt carrier and magazine. The 9mm barrel has a melonite finish, and the other barrels are chrome-lined for long wear and easy cleaning - machined from 4150 chrome moly vanadium steel and finished in black manganese phosphate. The receivers are CNC machined from forged 7075 T6 aircraft aluminum with a black hardcoat anodized finished, and the bolts are machined from Carpenter 158 steel.

Action : Semi-Automatic
Caliber : 223 Remington/300 AAC Blackout/7.62x39mm/9mm
Gauge : N/A
Capacity : 30+1
Barrel Lengths : 16.2"
OAL : 32.50"-36.25"
Weight : 7 lbs
Drop : Lever
Stock Material : 6-Position Synthetic Black
Metal