Choate Tool M-16/AR-15 Extended Butt Pad223 5.56. This pad is designed to be mounted on the buttstock and last for years through rough and tough recoil training and field use. The pad is rugged durable and is easily cleaned. It helps when using the barricade against a wall or when riding in a vehicle helps pad is also great for relieving shoulder pain and headaches. It helps with the heat generated from the buttstock helps with the nagging feeling in the neck from the buttstock helps with a little more control and helps with a few more reloads. But be aware the pad only goes so far some really big buffer tubes have been known to fall off. Be aware a pad should not be used when using handgun rated (or any) equipment. The pad needs to be securely mounted to avoid damage to your carbine or worse. It is also very useful when using a hammer side folding stock. The pad and pad are held in place by an adjustable clamp. Both clamps and clamp need to be removed and the buttpad must be in its folded position to take effect. Specifications for Choate Tool M-16/AR-15 Extended Butt Pad: Manufacturer: Choate Tool Color: Black Gun Model: M16 AR-15 Country of Origin: USA Features of Choate Tool M-16/AR-15 Extended Butt Pad M-16/AR-15 Extended Buttpad Package Contents: Choate Tool M-16/AR-15 Extended Butt Pad What firearm models does the manufacturer say Choate Tool M-16/AR-15 Extended Butt Pad is compatible with? The manufacturer suggests that Choate Tool M-16/AR-15 Extended Butt Pad is compatible with AR-15 M16Choate Tool CMT-16-09-02: M-16/AR-15 Extended Butt Pad223 5.56