Having owned an M4 a few years ago and being a huge Beretta simp, I can tell you it’s a toss up. Ultimately yes the M4 is amazingly tank like, etc, but there’s a reason I’m now searching for an M3 instead. All that weight, expense, reliability, but at cost of 922r issues, and issues cycling non full power rounds made me literally sell it at first for a Supernova. Then realizing having semi auto ability as well is the true best of both worlds.
the 1301 is just a damn good and well priced quality semi auto with a lot less complicated system and to my knowledge no 922r issues when modding. If you’re set on semi auto only, I’d pick the 1301, it’s a sexy gun from a fantastic manufacturer.