This adapter and extension combo is a direct replacement for the standard fixed AK-type stock. With this adapter installed" you are able to affix most M4 type collapsible buttstocks onto your AK" providing you with five positions to change the length of pull desired. The RE-47 will accept most milspec dimensioned collapsible type stocks.

Features:
Black finish
5-Position receiver extension
Watertight storage compartment
Ambidextrous single point sling mount
Fits stamped AK style rifles