I got an Ak-74 and like the 5.45x39. I'm still considering an upper for my Ar lower. I'm interested in Alexander Arms .21Genghis upper . Anyone one own? Anyone hear any reviews or anywhere I can get information on its performance? What about the magazines?  Can standard ar-15 mags be modified to fit 5.45x39 or are you stuck with 10 rounders?

With all the hype on 6.8 spc, 6.5 Grendel vs 6.8Sspc and so on, there is almost no info on the 5.45x39 21Genghis .I am assuming there must be at least one person out there with one...please help me out.

I believe TheTic00 has one. Drop him an e-mail.

[email protected]

Quoted: I have one... Wave was looking to buy mine, maybe he got one someplace else. Uses 20 and 30 rounders with the old style followers... do NOT use green followes.  Do not load to full capacity due to difference in taper of the rounds. Highly reliable, highly accurate, cheap to shoot, excellent quality upper.

Any reason you opted to sell it? So it can accept 223 mags with old style followers, how many rounds did you put into a 30 rounder to function properly?