SRVV AK-100 to M4(AR buffer tube) stock adapter for Russian AK-100 type rifles with 5.5mm folding stock. Made by Russian manufacturer SRVV from D16T aluminum alloy. Very light, but rugged. Designed for 5.5mm pin, mil-spec size buttstock.
Tube size: 1.15"mm (Mil-spec)
Designed, produced and tested by Survaval Corps engineering team Russia.