XTech Tactical offers extended 9 mm Luger magazines for Heckler & Koch’s VP9 and P30 series of semi-automatic pistols that boost the guns’ capacity from 15 rounds to 20. Utilizing an elongated polymer baseplate, the stainless steel magazines feature toolless disassembly and rear-facing witness holes. In addition to complete magazines, XTech also offers kits allowing for the conversion of stock factory magazines. Price: $60. Contact: XTech Tactical; (480) 999-0827; xtechtactical.com.