Taran Tactical Innovations PMAG Base PadDesigned to give you the edge over your competition. - Patented, proven push-pin design - Quickly and easily attaches to and detaches from the magazine tube - No specialty tools, devices, or additional springs required for assembly/disassembly, simply pop off the insert at the bottom of the spring and slide on the extension - One piece design; no small parts to keep track of - Minimal length addition to allow usage while in a prone position - Holds 35+1 rounds on the PMAG30 - Holds 46+1 rounds on the PMAG40 - Adds weight to magazine base to help mags drop free easier for faster reloads - CNC machined from billet aluminum - Hard Anodized - Made in the USA - Reverse compatible with GEN2 PMAGs