The one that was the most fun to shoot was my VZ58 Sporter Super Short. Firing 7.62x39 ammo through a 7 1/2" barrel is impressive to feel and see. LOTS of smoke, flame and noise. ( but it was only semi-auto and we have a 5 round, center-fire limit. ) The full auto guns are more impressive, such as the Sterling SMG, FAL full auto version, M2 and the two I shot in Vegas...a real P-90 and the Kriss. ( would never buy the Kriss, now ...as a result of that experience.) Too expensive and not really very practical. I guess that's why they don't sell that many here....mainly just for the novelty factor.