Description
DSI DS-15 Carbine Heavy Buffer System Kit
The DSI DS-15 Carbine Heavy Buffer System Kit combines the major components needed for an AR-15 carbine receiver extension assembly with a heavier 4.5 oz buffer. The kit includes a 7075 aluminum six-position buffer tube, 17-7 stainless steel buffer spring, heavy carbine buffer, steel castle nut, and buffer end plate.
The buffer tube features roll-formed threads, SOCOM drain holes, Type III hardcoat anodizing, and an internal Everlube dry-film coating. The castle nut incorporates multiple staking locations around its perimeter, providing more options for staking to the end plate than a traditional four-dimple design.
Proudly made in the USA.
Technical Specifications
| Buffer Tube |
• 7075 aluminum • Roll-formed threads • 6-position adjustment • SOCOM drain holes • MIL-A-8625 Type III hardcoat anodized • Everlube internal dry-film coating |
| Buffer Spring |
• 17-7 stainless steel - not piano wire • Heat treated for extended service life • Electropolished to reduce friction |
| Castle Nut |
• 4140 chromoly steel • Nitride heat treated • Multiple staking locations |
| Buffer End Plate |
• Stamped steel • Black oxide finish |
| Heavy Carbine Buffer |
• 4.5 oz • 3.3 inches / 84 mm • 4140 steel dead-blow weights • High-durometer blue polyurethane bumper |
Specifications subject to change without notice.