Jg Airsoft M16 Ris Aeg W/ Tightbore Barrel - BlackSPECIFICATIONS: OPERATION: ELECTRIC AUTOMATIC BUILD: METAL GEARBOX, RAIL INTERFACE SYSTEM POLYMER RECEIVER, STOCK FIRING MODES: SEMI AUTOMATIC AND FULL AUTOMATIC MUZZLE VELOCITY: 400 450 FPS MAGAZINE: 300 ROUND HIGH CAPACITY (GEAR WIND UP) GEARBOX: FULL METAL VERSION 2 BATTERY TYPE: 8. 4V LARGE INNER BARREL LENGTH: 509 MM HOP UP: ADJUSTABLE WEIGHT: 9 POUNDS PACKAGE INCLUDES: RIFLE, INSTRUCTION MANUAL, 300 ROUND HIGH CAPACITY MAGAZINE