AEG Rifle Custom Parts | Reinforcement M4A1 Light Weight Reinforced Outer Barrel   Front section can be easily removed. Changing to SMG style in few minutes!! Realistic stamping!   Compatible with Guarder M4A1 Fore-Handguard Set! Fully ompatible with TokyoMarui M4A1 / M4A1-RIS / SR-16. Standard M4 Type. SMG Type. Removable front outer barrel. MK23 Socom Silencer attached. Suitable for TokyoMarui M4A1 / M4A1 RIS / SR-16 M4. New Vari-length design, Light Weight, compatible with most handguard systems. Ex: Knight's RIS / RAS / FF-RAS / RAS-II, A.R.M.S. SIR System...etc. Please check out the review at... http://www.blackrain7.com/loadout/armoury/guarder/gbarrel.html Dimension: 374 (Overall length) mm Weight: 240 g Color: Black Material: 6061 Aluminum Alloy Thread: 14mm Negative Item No.: M16-12 Suggested Retail Price: USD 90.00