Spacer, Receiver Extension, 9mm SMG

Price: $25.00
Part Number : SA52091

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Description

This part was developed in 1997 at SA to correct a fundamental Colt design error.
The Colt 9mm SMG BOLT ASSY is shorter than the 5.56mm BOLT GROUP.
This creates over-travel in the SMG cycle of operation, Which leads to certain malfunctions and premature part wear.
(Most commonly bolt catch breakage).

The spacer is installed behind the action spring -
And radically changes the operating characteristics In both the Colt 9mm SMG and carbine.

Machined at SA from 7075T6 aircraft aluminum.

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