Ialso have a H&K 770, is that like the H&K G3?
Indeed! All HK rifles of the 600, 700 and 900 series work on the same roller lock principle as the G3.
Ialso have a H&K 770, is that like the H&K G3?
I don't think so! If I'm not wrong, the Chinese M77 and NP20 are both gas delayed blowbacks. Both commercial copies of the Chinese official military handgun, which you can get from Marstar. Somebody more knowledgeable please correct me, if I'm wrong.
Indeed! All HK rifles of the 600, 700 and 900 series work on the same roller lock principle as the G3.



























