Choate Tool 10/22 M4 Telescoping Pistol Grip Stock.22 Caliber. We used a steel adapter housing to allow the M4 stock to be attached to the 10/22 pistol grip stock. This stock offers the most versatile length of pull you will find. It will go from youth to adults length of pull with just a pull on the stock LOP range is 12 to 15 inches. Specifications for Choate Tool 10/22 M4 Telescoping Pistol Grip Stock: Manufacturer: Choate Tool Gun Model: M4 Country of Origin: USA Features of: Aluminum adapter to fit the 10/22 pistol grip stock Comes with a telescoping M4 style stock Can use any AR telescoping stock polymer construction Package Contents: Choate Tool 10/22 M4 Telescoping Pistol Grip Stock What firearm models does the manufacturer say Choate Tool 10/22 M4 Telescoping Pistol Grip Stock is compatible with? The manufacturer suggests that Choate Tool 10/22 M4 Telescoping Pistol Grip Stock is compatible with M4Choate Tool CMT-07-01-52: 10/22 M4 Telescoping Pistol Grip Stock.22 Caliber