• Designed to replicate function of a Carbine Buffer System
• Steel buffer body, phosphate coating
• Compact Buffer
• Proprietary short pistol buffer weight Carbine- 3.7 oz, Heavy- 4.6 oz, H2- 5.5 oz, and performs like a traditional carbine buffer setup in combination with KAK's flatwire buffer spring
This is a Proprietary part and will only work with the 5.25" receiver extension and KAK's Flatwire Buffer Spring.