Where did you buy the prop assault rifle seen in TMTTTJ and Hamlet?
It’s an airsoft gun. I bought it off eBay for around $30.00 if I remember correctly. eBay is a great place to look for cheap props/costumes/etc.
I also recommend finding an army surplus store in your area. In Fresno alone there are 3 stores, so you should be able to find something in your locale. If not, check out Major Surplus and Survival. http://www.majorsurplusnsurvival.com