The Maisto kits can typically be found around most toy sections in your local stores. They carry them at Fred Meyers around me, but I haven't checked Target. Walmart used to carry some, but I haven't seen them around in over a year, maybe two. Any 6" figure should do these days. Hasbro and Mattel have been moving over to this scale with up to 20 or more points of articulation! So options for 1/12 scale figures of almost any genre are available these days. 1/12 scale vehicles, not so much lol. But hey, Master chief, Captain America, Black Widow, plenty to choose from and a growing custom market to modify them to your heart's content! Heads, hands, weapons, accessories galore.
If I could slap a one point sling on the MP-5K it would be tossed on her back for sure lol. Although, at 160mph, maybe a two point would be wiser lol!