1 × NBS Mil-Spec M4 Carbine Stock - TBA04; 1 × Discount Mil-Spec Carbine Buffer / Receiver Extension Kit - AR15-Buffer-Kit; 1 × OEM Mil-Spec AR-15 Lower Parts Kit - AR15-Lower-Parts-Kit
1 × Trinity Force AR-15 Lower Vice Block - MNCQB; 1 × Trinity Force AR-15 Upper Vice Block - MNCHM
Subtotal: $195.80
Out of stock
The Trinity Force SBA Spring (Silent Buffer Assembly) is a drop-in recoil system designed to help the AR-15 platform function more smoothly and quieter. The carefully balanced, all-in-one system is easy to install and quickly reduces friction and vibration with much smoother harmonics than traditional buffer systems.