The Mossberg 510 Youth is a pump-action shotgun that sports the full-sized models dual extractors positive steel-to-steel lockup twin action bars anti-jam elevator and ambidextrous tang safety but is scaled down for a childs use. This shotgun features the Super Bantam adjustable synthetic stock with removable 1 spacer and vented recoil pad EZ-Reach forearm and reduced trigger-to-grip distance. Additionally the 510 Youth has a vent rib 18.5 barrel Accu-Set F M and IC chokes dual bead sight and sling swivel studs.DetailsAction Pump - Gauge 20 - Capacity 4 - Chamber 3 - Barrel Type Vent Rib - Barrel Length 18.5 - Sight Dual Bead - Choke Accu-Set - LOP Type Adjustable - LOP 10.5-11.5 - Barrel Finish Blued - Stock Finish Synthetic w Spacer - Weight 5 - Length 34.75 - Shell Size 2.75 - When Mossberg set out to create a dedicated shotgun for youngsters and small-statured shooters we didnt just slap a smaller stock on our legendary 500 and call it good. Instead our engineers made everything smaller and created what is arguably the worlds smallest fully-functional pump-action shotgun. Available in either 20 gauge or .410 bore the Mini features an 18 12 vent-rib barrel with dual-bead sights. Parents dont have to worry about their young shooter growing out of this gun too quick the adjustable classic stock can be adjusted from 10 12 to 11 12 length of pull so the Mini can grow with your child. This adjustability also helps provide a proper fit for young shooters and allowing for a more safe and enjoyable shooting experience. Weighing in at 5 pounds and only 34 long the 510 Mini proves that big things do come in small packages