Ergo Grip AR-15 and M4 Adjustable Stock Action Spring CAR

The ERGO Carbine Action Spring is a carbine length action spring for AR15 and M4 Adjustable Stocks, made to M4A1 Mil-Spec specifications. Specifications for Ergo Grip AR-15 and M4 Adjustable Stock Action Spring CAR: Manufacturer: ERGO Gun Model: M4, AR-15 Features of Ergo Grip AR-15 and M4 Adjustable Stock Action Spring CAR: Carbine Length Action Spring for AR-15 and M4 Adjustable Stocks Made to M4A1 Mil-Std Specifications Package Contents: Ergo Grip AR15 and M4 Adjustable Stock Action Spring CAR