6mm heavy airsoft BB (0.28g,0.30g,0.32g,0.36g,0.40

0.28g,0.30g,0.32g,0.36g,0.40g... BB Brand"GoldenBall" 1) high precision, seamless,roundness, polish 2) Perfect spheres and no air pockets! 3) ISO 3290-2001 G0 certificate, highest industry standard! 4) weight =0.28g,0.30g,0.32g,0.36g,0.40g... 5) diameter = 5.95mm 6)Eco-friendly Materials and Mineral used 7) color = white,black, green, or others 8) Designed for tight high performance barrels - model: GB5028W, 0.28g, 5.95+/-0.01mm, white; 2500rds/bag, 30bags/Ctn.- model: GB5030W, 0.30g, 5.95+/-0.01mm, white; 2000rds/bag, 30bags/Ctn.- model: GB5030D, 0.30g, 5.95+/-0.01mm, black; 2000rds/bag, 30bags/Ctn.- model: GB5032W, 0.32g, 5.95+/-0.01mm, black;2000rds/bottle, 30bags/Ctn.- model: GB5036D, 0.36g, 5.95+/-0.01mm, black; 1000rds/bottle, 50bts/Ctn.- packing: 4000 Rounds/Bag, 20Bags/Carton- For use in higher end spring airsoft rifles,AEG's,gas airsoft pistols,or higer.ps: 6mm airsoft BBs, include 0.12g,0.20g,0.23g,0.25g,0.28g,0.30g,0.32g,0.36g etc