Leapers/UTG has designed the best polymer magazine that is guaranteed to feed and function flawlessly. UTG is known for its quality products and this 30 round .223/5.56 magazine is no exception. This magazine has endured multiple tests; temperatures ranging from extreme heat to extreme cold, water, dirt, dust, drop and even a weight test. Yes, a weight test, drive your truck over it, pick it up and place it back in your rifle to continue shooting.Why spend money on the expensive M-branded magazines that are not guaranteed to flawlessly perform, when you can buy the brand you know and trust, UTG - The Best Never Rests.Features and Specifications:Caliber; .223/5.56 NATOHolds 30 RoundsDurable and super strong polymer constructionMolded Over-Insertion Stop and Grip TextureUTG Blue follower is four-way and anti-tilitHigh longeity stainless steel springGuaranteed reliable feedingMade in the USA