FEATURES: Constructed of heat treated steel Coated with a black Teflon finish Long action magazines are available in 300 Winchester magnum or 338 Lapua Long action magazines are also available in two different cartridge lengths, 3.715" and 3.775" 3.715" is used on many factory rifles and the MDT TAC-21 long action chassis (100-008-333) 3.775" is compatible with Remington long action Police rifles Polymer followers Made in USA AICS style magazines, fit AICS stock and other AICS compatible bottom metals .223 magazine features the same steel body and construction .223 magazine has a polymer insert to guid Mfg: Accurate Mag