Stainless Steel 5 Round .450 Bushmaster Magazine This AR-15 magazine for 450 bushmaster is a must for big bores caliber users. 450 Bushmaster is a respectable caliber that is sometimes overlooked. These magazines are crafted with the utmost quality with guaranteed durability and longevity. Reliable and well-constructed, grab your 450 Bushmaster magazine from BCA today. {{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="42"}}