Ultimate Arms Gear Tactical Stealth Black 18 Round Rifle Ammo Shot Shell Cartridge Hunting Stock Buttstock Slip Over Carrier Holder Fits .308 308 Federal Arms HK91 G3 Ambidextrous Use for Both Righty and Lefty Shooters Universal Bolt Lever Pump Action Sniper Hunting Rifle 18 Rifle Ammo Holder ( 9 Shells On Each Side ) Black Color. Length: 6". Ambidextrous Use for Both Righty and Lefty Shooters. The Shell Holders are Elastic and Expandable and Will Fit Up to 18 Rounds Snugly and Securely While On The Go. Durable Black Endura Material Will Hold Up To Years Of Heavy Outdoor Use. Attaches Firmly To The Butt/Stock Of Any Rifle. Clever, Convenient Rifle Shell Holder. Allows You to Have Ammo at The Ready !