After extensive testing of magazines on the market for 458 SOCOM the Lancer L5 Advanced Warfighter Magazine was the top choice due to the polymer body and steel feed lips. The CMMG-modified Lancer L5-AWM takes this top of the line magazine and perfects it for the wide range of 458 SOCOM on the market, by modifying the way the feed lips hold the 458 SOCOM without machining or weakening the steel feed lips. Laser Engraved 458 SOCOM. 10 round capacity. NOTE: This magazine is a modified 30rd 5.56 magazine and as such can still hold 30rds of 5.56 ammo. The magazine has been modified to function properly with 10rds of .458 SOCOM, but will physically hold 11rds if forced. Due to the many state restrictions on magazine capacity we will not ship these magazines to individuals in the following restricted states: Hawaii Maryland Massachusetts New Jersey New York California Connecticut Colorado Washington D.C. Chicago, Aurora, Oak Park, Illinois South Bend, Indiana FEATURES: Hardened steel feed lips Impact resistant polymer body Top of magazine catch is steel Non-tilt follower Constant curve internal geometry Stainless steel spring Aggressive texturing on body for positive grip Slim body design Slide on bottom, easy to dissemble Designed, Tooled, Manufactured and Assembled in the USA