MagPul PMag Extension - works with all 5.56mm/.223 10/20/30 and 40 round PMags. Designed to be used with or without the factory lock plate. Simply remove the factory bottom plate and slip the TacCom extension into place. The factory mag spring has plenty of strength to reliably feed all 45 rounds into your weapon. Designed to allow easy removal for cleaning of the magazine when required. Provides 5 extra rounds of capacity in most applications and 6 rounds in some cases. Features Taccom logo on one side and "Be The Leader.....Don't Follow One" on the reverse. Price is $13.95.