20 and 30 round capacity magazines CANNOT be shipped to: California Colorado Connecticut Hawaii Maryland Massachusetts New Jersey New York Oregon Rhode Island Vermont Washington D.C. Washington If your billing/shipping state is one of the above restricted states, your entire order will be canceled. These magazines may also be restricted by certain local jurisdictions. It is your responsibility to know and abide with your local gun laws. Any orders with magazines MUST be shipped to the billing address of the credit card. Law Enforcement officers are not exempt from this policy. Specifically engineered for use with heavy subsonic .300 Blackout ammunition (200+ grain), the Lancer L5AWMA(R) 300BLK magazine features an updated internal geometry which allows longer heavier cartridges to stack properly, increasing feeding reliability when compared to a traditional .223/5.56 magazine. The outside of the mag body is molded with distinctive .300 Blackout markings and the magazine ships with a contrasting flat dark earth floor plate for easy visual identification. The L5AWM 300BLK magazine has been specifically engineered for use with heavy subsonic .300 Blackout ammunition, particularly with 200+ grain projectiles. The updated internal magazine geometry allows these longer heavier bullets to stack properly, which increases feeding reliability when compared to a traditional .223/5.56 magazine. The outside of the mag body is molded with distinctive .300 Blackout markings and the magazine ships with a contrasting flat dark earth floor plate for easy visual identification. NOTE: These magazines have been specifically designed and optimized to alleviate the stacking and feeding issues commonly experienced when running 200+ grain subsonic .300BLK cartridges in standard .223/5.56 magazines. If you are shooting lightweight supersonic .300BLK ammunition (200gr) CAPACITY 20 Rounds COLOR Translucent Smoke