Locking Systems

operating roo bolt extension bolt locking lug prop

Bolt Locking

Figure 6-4. Gas Piston Actuates Locking Lug Prop. Gas Pressure Then Unlocks Bolt.

gas piston operating roo helical locking lug headspace adjusting ring bolt locking lug prop helical locking surface in receiver

Figure 6-4. Gas Piston Actuates Locking Lug Prop. Gas Pressure Then Unlocks Bolt.

bolt extension bolt head retaining lug

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