hoppes9: Heckler & Koch HK21
Nothing Lasts Forever
Ol' Dirty Tumblr
chrausis: HK21 custom PDW
oa-ar15: belt-fed guns - the HK21
TSC HK21 A U.S made clone of the HK21, this is a belt-fed,
learnosaurusrex:HK21-E
oa-ar15: belt-fed guns - the HK21
hoppes9: HK21