What does it offer over a Canadian made Vbull kit?
Are those even available yet? Sounds like they're still in 'beta'.
OAL with his proprietary mag is listed by Glen as 223-2.6”, .308 – 2.9”, Lapua 3.9”
(For the record, if it's anything like the AI mags, it'll actually be less than that for reliable feeding).
Also, "Lapua mags will work with ultra mag cases but the feed lips may need bent in a little bit"