Sterling Trucks UMP45 Automobile User Manual


 
13
DESCRIPTION OF ASSEMBLY GROUPS
The bolt group (Fig. 8 and 9) consists of:
1 bolt
2 firing pin spring
3 firing pin
4 extractor
5 firing pin retaining pin
6 recoil spring assembly, complete
6a guide ring
6b support
Fig. 8 Bolt Group, assembled
Fig. 9 Bolt Group, disassembled