ARCTURUS RS 14 Steel Teeth AEG Piston & Bearing Piston Head Set – V2/V3 Gearbox Upgrade

The ARCTURUS RS MIM Steel Teeth Piston & Bearing Piston Head Set is a performance-focused internal replacement and upgrade designed for compatible Version 2 and Version 3 airsoft AEG gearboxes. Combining a lightweight, durable polycarbonate piston body with a reinforced 14-tooth MIM steel rack, this assembly offers improved durability and reliable operation for electric airsoft rifles.

The piston features 14 metal injection molded (MIM) steel teeth, providing increased wear resistance compared with traditional polymer-tooth pistons. Its lightweight polycarbonate construction helps reduce unnecessary reciprocating mass while maintaining strength under repeated gearbox cycling. The reinforced design makes it an excellent choice for replacing worn factory components or upgrading compatible M4, AK, MP5, G36, and other AEG platforms.

Included with the piston is a ball-bearing piston head featuring a single O-ring seal, designed to support smooth spring movement and consistent air compression when properly installed. With its convenient drop-in design, the ARCTURUS RS Piston & Bearing Piston Head Set is a practical upgrade for airsoft technicians and players seeking dependable gearbox performance, durability, and easier maintenance.

Features

• 14-tooth MIM steel piston rack for durability

• Lightweight, reinforced polycarbonate piston body

• Includes matching ball-bearing piston head

• Single O-ring piston head seal

• Designed for compatible Version 2 and Version 3 AEG gearboxes

• Reinforced steel teeth help resist wear during repeated gearbox cycling

• Lightweight construction helps reduce reciprocating mass

• Ball-bearing piston head supports smooth spring rotation

• Designed to support consistent air compression

• Drop-in style construction requiring little or no modification in compatible gearboxes

• Suitable for gearbox repair, replacement, and performance upgrades

• Compatible with a variety of M4, AK, MP5, G36, and other AEG platforms when gearbox specifications match

• Ideal for airsoft technicians and custom AEG builds

Specs

• Manufacturer: ARCTURUS Tactical

• Series: RS

• Model: MIM Steel Teeth Piston & Bearing Piston Head Set

• Product Type: AEG Piston and Piston Head Assembly

• Piston Material: Polycarbonate

• Piston Rack Material: MIM Steel

• Piston Teeth: 14

• Piston Head: Ball-Bearing Type

• Air Seal: Single O-Ring

• Gearbox Compatibility: ARCTURUS Tactical V2 / V3 and other compatible AEG gearboxes

• Platform Compatibility: Compatible M4, AK, MP5, G36, and other AEG platforms

• Installation: Drop-In Style; fitment and gearbox setup should be checked

• Included Components: Piston with Steel Tooth Rack and Bearing Piston Head

• Package Quantity: 1 Set

• Manufacturer SKU: AT-SP-U05

• UPC / Barcode: 810127362147