The armscorp things are complete crap. If you want a .22lr military lookalike, the only decent ones were imported by Mitchell I believe, manufactured by Jager. They made a couple AR copies, a Galil, and a couple others. They are hard to find now.
I had the standard AR15 A2 (round handguards) model, a Jager AP74. THey look and feel alot like the real thing, and shoot pretty well. Traded it recently for a SAR1. The Armscorp things are extremely goofy, and only barely look like the real thing.