The Mesa Tactical Lucy stock adapter transforms a Remington 870 shotgun by converting 20 GA stocks to fit a 12 GA configuration, delivering a versatile solution for shooters who want to optimize their platform without sacrificing reliability. Crafted in black for a discreet, tactical look, this 20 GA to 12 GA stock adapter is designed specifically to fit Remington 870 12 Ga receivers, ensuring a secure, precise fit and stable handling during field hunts or range sessions. Built as a dedicated long gun part, the Lucy adapter provides an efficient bridge between gauges, enabling improved control and compatibility with a wider range of stocks and accessories while maintaining the durability and performance Mesa Tactical is known for. Whether youre refining your shotgun setup for waterfowl, upland birds, or precision practice, this adapter enhances versatility by enabling cross-gauge stock configurations without compromising strength or function. Engineered for dependable performance in rugged conditions, the Lucy adapter helps you maximize existing equipment, simplify gear, and tailor your Remington 870 to your exact pursuit.