Corey,
There are two models the STG and the E4, the difference being the STG takes Microtech mags and the E4 takes standard AR mags. The E4 is about $300 more, my thought was I can buy a lot of Microtech mags for $300.
MSAR 223 10rd Target Mag New Factory $19.99
MSAR STG 223 20rd Clear Smoke Mag New $19.99
MSAR STG 223 42rd Black Mag New Factory $22.99
MSAR STG 223 42rd Clear Smoke Mag New $22.99
There are some of the STGs on GunBroker for $999 another place that has a lot of the guns and accessories is.
http://www.ratworxusa.com/The gun is a lot more fun to shoot than the LWS380 and 5.56/223 is cheaper and easier to find than 380 ammo.
it is quite accurate and with the gas piston has less recoil than a standard AR.
John