Extends below the magazine providing an additional finger groove for full hand grip. Protects magazine during quick reload ground drops. Made from long lasting durable thermoplastic elastomer that ages gracefully for years of service. Textured with Hogue’s famous Cobblestone pattern for increased comfort and grip. Simple installation (magazine not included). Precision fit for GLOCK 42 (.380 ACP) with HandALL Beavertail Grip Sleeve (compatible ONLY with GLOCK 42 .380 ACP 6-Round magazines)