Green’s Dictionary of Slang

a.k. n.3

[abbr.; the Russian-made AK-47 was the preferred weapon of the world’s guerrilla fighters and has found its way to America’s urban battlefields via mail-order purchases and illicit gun supplies]

(US black) the AK-47 automatic or semi-automatic assault weapon.

[US](con. 1969) M. Herr Dispatches 37: Bullshit questions about [...] the ranges of AKs and 16s, what shells did when they hit treetops [etc.].
[US]L. Bing Do or Die (1992) 226: We was usin’ AKs — we called ’em ARs back then.
[US] Dr Dre ‘Deeez Nuuuts’ 🎵 But uh, rat-tat-tat-tat that ass / Startin’ static with Dre, make way for the AK.
[US]W. Shaw Westsiders 337: I’ve heard that you can buy an Uzi or an AK for as little as $200.
[SA]IOL News (Western Cape) 2 Nov. 🌐 The old government never used ak’s [sic] [...] but now the MK they use ak’s.
[US]‘Dutch’ ? (Pronounced Que) [ebook] Muhfuckas had AKs, ow-wops, the whole nine!
[US]D. Winslow ‘Broken’ in Broken 10: Harold still has AK boy pinned against the wall.