Description: Bushmaster ACR Firing Pin Spring. This steel constructed ACR firing pin spring is manufactured for the Bushmaster ACR rifles chambered in .223 Rem and 5.56x45mm. The firing pin spring is responsible for retaining and releasing tension to the firing pin during operation of the rifle. This piece is perfect as a spare on the workbench or as an immediate replacement for a lost or damaged component. 

Note: It is recommended that all Bushmaster parts be installed by a qualified and trained gunsmith.

Fits: ACR

Manufacturer: Bushmaster