5000 M&P Elite Competition Grade By Smith & Wesson .20g 6mm Pro Airsoft BBs - Tophatter's Army Products & Self DefenseEngineered for high power and high speed airsoft rifles and pistols. It is recommended that . 20g or heavier BBs are used in high end Electric, Gas, & Spring Airsoft Guns. A heavier BB will be more consistent and accurate compared to . 12g BBs. Pick up some extra bags of BBs today and keep your ammo supply fresh. Features: High Precision 5. 95 Diameter BB with + 0. 015mm Tolerance Seamless Design For Perfect Roundness And Avoids Jams Polished Surface