The magazine allows you to pull the collar down as you drop the ammunition into the magazine. This makes it possible to drop several rounds in at a time and load magazines in a fraction of the time with far less effort. The Speedmag works in all MilSpec AR15 lower receivers and will accept any ammunition that fits in regular milspec magazines like .223 Remington 5.56 NATO and .300 AAC Blackout.
STOCK NOTICE: This item is NOT marked "In Stock". We will contact you within 12-24 hours by email if your order is on backorder with our distributor and will take longer than the 5-7 business days it takes us to ship out. Please do not order if you need this item shipped immediately.