FAL mags- These have some finish wear, especially in the mag well area. Overall condition is good to very good with no dents or bends. $6 each plus shipping, or 10 for $56 shipped.
AK follower/floorplate sets are made by FSE, in 7.62x39. These count as two US parts toward meeting your compliance numbers. Floorplate is stamped, and marked FSE USA. Follower is a composite material(delrin perhaps?), and unmarked. The followers are made in the pattern of the waffle mag followers, although the floorplates will not fit waffle mags. The differences between these and OEM steel followers are significant enough that even ATF will recognize them.
$2.60 per set
5 or more sets, $2.30 per set
10 or more sets, $2.00 per set
+ actual shipping rounded to the nearst $1.