Systema PTW Max: This one has been my baby for years. Best results come from high quality .3gram bbs. Details are listed below -M4A1 Max -Madbull Mk18 Rail -Dytac 10.5” outer barrel -Aimpoint T1 – Repro -Insite PEQ 14 –Repo- Green laser-will need new rubber lens holders -7 Systema PTW Magazines—All feed flawlessly - 2 Cylinders—CQB Velocity, and field velocity (approx. 300fps and 390fps) - Systema M4 outer barrel -Systema CQBR length barrel and hopup (un-modified) - 1 nunchuck style Lipo Battery 11.1v PRICE: $975obo.