Trinity Tactical Aluminum 6 Round Shell Holder Compatible with S&W M&P12 Picatinny Mount BlackThe Trinity Tactical Aluminum Shotgun Shell Holder is designed to provide fast, secure access to spare ammunition for your Smith & Wesson M&P12 shotgun. Engineered for Picatinny rail mounting platforms, this durable side saddle carrier securely holds up to six 12 gauge shotgun shells, keeping them readily accessible when you need them most. Constructed from high strength aluminum with a black anodized finish, this shell holder is built to withstand