Somehow as well, I can´t see smuggling a bunch of M-16/AR-15, M-4s from the US to Mexico - as the MSM tells us happens constantly - when the more utilitarian AK-47s are available throughout Latin America constantly smuggled in from Venezuela, Russia, China or their proxies.
No. This was heavier stuff, the kind that cuts right through police/military soft body armor or vehicle sheet metal. It sounds like somebody had a fairly high-level hit in mind.
In total, CBP officers found: an MG42 7.92 universal machine gun, a SA43 7.62 X54R MM machine gun, 680 rounds of ammunition, including 280 7.62 caliber rounds, 100 8mm caliber rounds, 100 22LR caliber rounds, and 200.233 caliber rounds, and two boxes of machine gun ammunition links.