Hawkins Precision M5 Detachable Box Magazine Rifle Bottom Metal is designed specifically for precision shooting. CNC-machined from a single piece of billet aluminum, this precision rifle bottom metal incorporates a barricade stop in front of the magazine well, and has a drafted magazine port. The M5 DBM also includes a patented cantilever spring release that will not open under recoil. FeaturesFits M5 inlets.Uses AICS magazinesComes standard with action screws and bedding pillars