Parts kit for the SIG556 rifle. This kit includes the following components and is for the original style trigger casing:
- (1) Firing pin
- (1) Firing spring
- (1) Take down pin plunger, machined
- (1) Take down plunger spring
- (1) Recoil spring
- (2) Spring pin
- (1) Support washer
- (1) Crush washer