Fire Support

Guarder M4A1 Reinforced Steel Outer Barrel - 2003 Ver.
Suitable for TokyoMarui M4A1 / M4A1 RIS / SR-16 M4.
New Vari-length design, 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 = 258mm and 132mm less 16mm ovewrlap where one screws into the other
Weight: 480 g
Color: Black, P-Process surface finish technology.
Material: Steel
Thread: 14mm Negative