A heavy-duty gun with excellent performance at a low price. Includes a tactical rail system on the top and front sides for accessories. Fires at an amazing 360-380 FPS with .12g BBs and 280-300 FPS with .20g BBs. We recommend using .20g BBs for best accuracy. This is a spring gun and has to be cocked for each shot. It's fast, clean, inexpensive and easily maintained. Requires no gas or batteries.