NEW MP40 SPRING ASSAULT SMG WW2 AIRSOFT GREASE GUN RIFLE M3 M40 Sniper BB Pellet Specifications Spring-powered Projectile Velocity: 350 feet per second Folding stock Strong plastic body RIS (Rail Integration System) Single-shot cocking system 31-Round magazine clip 100 ft. effective range Brand New This spring-powered MAC 10 airsoft replica features a strong plastic body construction and single-shot cocking system. It includes a detachable 20-round magazine clip and fires .12g BBs are a firing speed of 230 feet per second with a 50 ft. effective range.