TandemKross Shock Block Features The TandemKross Shock Block is built around an aluminum reinforced buffer body designed to absorb the repeated impact of the bolt cycling to the rear of the Ruger PC Carbine s receiver. Left unchecked that repeated metal on metal contact can gradually batter the receiver over a high round count and the Shock Block is engineered specifically to intercept that impact before it reaches the receiver itself. Its reinforced construction is intended to hold up to sustained use rather than compressing or breaking down the way a softer buffer material might over time. That durability is what makes the Shock Block a practical long term investment for PC Carbine owners who shoot regularly. Installation is designed to be simple and tool free allowing the buffer to be dropped directly into place without disassembling the rifle s action or sourcing additional parts. Finished in black the Shock Block blends in with the PC Carbine s factory finish without altering the rifle s appearance. TandemKross built this buffer as a direct answer for pistol caliber carbine shooters who want to protect their investment and extend the usable life of their rifle s receiver. For Ruger PC Carbine owners looking for an easy effective way to reduce bolt battering the TandemKross Shock Block is a straightforward upgrade. TANDEMKROSS Shock Block Specifications Manufacturer: TANDEMKROSS Color: Black Material: Aluminum Compatible Hosts: Ruger PC Carbine Available At: GrabAGun