My son just bought and M4 semi/full .20 cal at Modell's His critique was it was underpowered compared to his friends rifles for putting rounds down range they were all coveting my .177 crossman (I only use real ammo)but mine has a mussel speed of 650 fps and a 2-7X32 scope....But you could buy one with scope for less than a $100 American and I think the sell .177 plasticsoft rounds too..... yeah his m4 was about $60.... that's what yah have to think about too a better gun you become a sniper in war games less likely to get shot