This magazine is made for BAR rifles designed for extended detachable box magazines. These are special versions only and designated as the BAR DBM in 308 caliber. Please note that it does not fit similar models such as the Hog Stalker.
The BAR is a legendary semi-automatic hunting rifle. When the specialized DBM version of the BAR was introduced it offered the advantage of a full 10 rounds of 308 Win. This is a fun rifle to shoot and can be an excellent hog rifle.