This magazine system offers you 90 rounds of 5.56mm or .223 ammunition. Made of high strength polymer with a see through back cover and is able to withstand blows that might otherwise dent metal magazines. The 1.25 lb. magazine has a fully loaded weight of only 3.60 lbs. with a height only ¾” taller than the standard AR 30 round magazine. The clear back cover enables the shooter to view number of remaining rounds quickly. The magazine system includes 9 ten round stripper clips and a 10 round magazine loader. Check local laws for magazine capacity restrictions.