This metal buffer tube fits all KM4 Series AEGs, including the CQR and KM16 Series and allows MilSpec 6-position stock functionality. It appears on KM4 diagrams as part 509 (or as part 80 on the CQR Series diagrams).

Weight .5 lbs
Dimensions 6.5 × 1.2 × 1.2 in

In stock

In stock

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