Browning AB3 MagazinesAB3 Rifle Magazine Staggered box magazine, formed steel body and feed lips, polymer base plate and shoulder. Quality is standard. Always. Detachable magazines, often a costly upgrade to other factory rifles, have been a standard feature on Browning big game rifles for decades. The AB3 is no exception, featuring an extremely tough steel and polymer box magazine that protrudes just enough from the stock to allow you a tactile reference if a mag is