Colt Ar15a4 Plunger Spring

FITS: AR-15 Accurized HBAR, .223; AR-15 Government Carbine, .223; AR-15 Match Target, .223; AR-15 Match Target Competition HBAR, .223; AR-15 Match Target Competition HBAR II, .223; AR-15 Match Target HBAR, .223; AR-15 Match Target Lightweig