Retro Arms CNC Gearbox NGRS 8mm

• Retro Arms Gearboxes are manufactured from one block of aircraft aluminium (Dural) EN AW 7075 T651; they are milled on multi-axis CNC machines.
• For comparison, the strength of aircraft aluminium (Dural) EN AW 7075 T651 is 550MPa, common construction steel has only 390MPa.
• All of the gearboxes are designed for the best durability, resilience and strength on the most powerful springs.
• These gearboxes are designed with full Tokyo Marui compatibility in mind.
• Includes bearing bores for 8mm bushings or bearings (not included).

• Package contains gearbox shell, spring guide and all necessary screws.
• Suitable for Tokyo Marui NGRS Recoil Shock rifles.
• For TM NGRS 416D
• For TM NGRS 416C
• For TM NGRS 417
• For TM NGRS M4
• Compatible with Leviathan by Jefftron.
• Compatible with original NGRS parts.
• Compatible with Titan from Gate.

2024 Version Gearbox Case:

• Reinforced the integrity of the gearbox around the pistol grip.
• Enlarged the holes for cables.
• Enlarged front hole for cables for 416C compatibility.
• Better cable routing around motor axis - added groove and nose as on V2 gearbox.
• Improved bearing bore drilling - more accurate bore and larger tolerances on bearing diameters.
• Enlarged grooves for the switch backdrop.
• Enlarged cylinder bore.
• Redesigned cylinder bore relief - created for maximum strength.
• Redesigned cylinder mounting on 4 support points instead of full length - greater compatibility with multiple manufacturers.
• Enlarged piston groove for increased gearbox life.
• Edge removal - previously a cable routing issue.
• Removal of radius - previously a problem with bolt movement.
• Reinforcement around the cylinder in the rear.
• Spring guide together with mech box in package to ensure full compatibility with retro arms piston.
• Installation of the inner parts and gearbox requires professional knowledge, experience and skills. There are a lot of airsoft manufacturers on the market and every one of them create their own sizes, there are no standards like engineering ISO in airsoft.