Bolt Return Spring

spring follower on operating rod

captive recoil spring

Figure 19-2. Method of Retaining an External Captive Recoil Spring.

recoil spring seat captive recoil spring operating spring mounts on outside of receiver

Figure 19-2. Method of Retaining an External Captive Recoil Spring.

cross pin retains operating spring in operating rod

Machine Gun

operating rod

Bolt Fortner

bolt

Figure 19-3. Captive Spring Used To Return Breech Bolt and Operating Rod.

bolt

Figure 19-3. Captive Spring Used To Return Breech Bolt and Operating Rod.

Appendix A

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