A magazine grip extension replaces the magazine base plate increasing the total length of the magazine. Increasing the total length of the magazine provides for extra grip length which in turn stimulates superior control and comfort. Notes: The Glock 30 9-Round magazine utilizes the Pearce PG-29 Extension DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.