So I have an aluminum receiver HK91 clone. It is the FA91, and probably built sometime in the late 90's to early 2000's. Anyway it's been said that because you couldn't weld aluminum and steel together that the trunnion is pinned in on these. It appears to be the case as there are two visible pins on the top and bottom of the trunnion. From what's been said about these is that after a while the pins become loose and the trunnion and barrel start to work out. Any truth to that?
Anyone else hear have a aluminum receiver HK clone with many rounds through it that could give a opinion?
Anyone else hear have a aluminum receiver HK clone with many rounds through it that could give a opinion?