This 450 Bushmaster magazine is made of a stainless steel alloy and has been heat-treated for strength and durability.These mags are resistant to corrosion feed reliably and are made in the United States. Made to fit in AR-platform 450 Bushmaster rifles.5-round capacity 450 BushmasterFits AR-platform riflesStainless steel alloyChrome-silicon finishMade in the United StatesIf you are a hunter who relies on your 450 Bushmaster AR order yourself a few of these Ruger 5-round stainless steel mags. They wear in nicely allowing the finish to burnish into the mag and create a self-lubricated surface.Searching for 450 Bushmaster? Score big savings when you shop our online selection of cheap 450 Bushmaster Ammo available from the top brands you trust.