adaptive combat rifle
ACR ブッシュマスターACR マグプルマサダ MASADA MagpulMASADA
The Bushmaster ACR (Adaptive Combat Rifle), formerly known as the Magpul Masada, is an American assault rifle designed by Magpul Industries and manufactured by Bushmaster Firearms International and Remington Arms. Remington produces the selective fire version for military and law enforcement use while Bushmaster makes the semi-automatic only version.
It bears a resemblance to the FN SCAR, and borrows features from other rifles such as the AR-15 and H&K G36. This weapon can switch between using 5.56×45mm NATO, and 7.62×39mm ammunition by simply replacing the barrel, bolt, and magazine.