Kalashnikov USA K-21 Eastern Block M-Lok Rail
https://gunsbuyerusa.com/produ....ct/kalashnikov-k-21-
Kalashnikov K-21 M-LOK Rail
Kalashnikov K-21 M-LOK Rail
90001488B
UPC 811777021477
Four M-LOK slots on each side of the lower handguard
Matching upper handguard with recessed 5 slot 1913 rail
