The B3 Nemesis Swivel Stem Connector Release-Black is a high-performance component designed for rimfire enthusiasts. Its roller sear mechanism provides a smooth and consistent trigger pull, while the single-jaw design ensures precise control over the firing pin. The stainless steel jaw adds durability and resistance to wear. With seven stem length settings, users can customize the fit to their specific needs. The Tab Lock Technology ensures a secure connection between the swivel system and the stem. Fast shipping is available on this product, so you can get started with your rimfire setup quickly.Key Benefits and Features: Roller sear: Single-jaw design: Stainless steel jaw: Seven stem length settings: Tab lock swivel system: