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 350 FPS with .12g BBs and 300 FPS with .20g BBs. We recommend using only .20g BBs for best accuracy and performance. 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. 37-round magazine Removable tactical rail system Functional safety unit Adjustable Hop Up Adjustable rear sight Attention customers : The cleaning rod included with the gun is NOT the same as shown in the manual. The one included is a plain rod with nothing on the ends. TSD Sports M100 Spring Sniper Rifle 50-yd effective range 37-round repeater.