Airsoft AEG Gun gearbox / Mech Box Plastic & Metal Air Seal Nozzle
This is perfect for any AEG, increased air flow and forms a tighter frictionless seal between your cylinder head and barrel. Designed with either light weight ABS plastic for high rate of fire (Rounds per Second) or strong lightweight metal for high FPS. Includes internal O-ring construction for tightest seal possible.

Airsoft AEG Gear Box Piston, Cylinder, Piston Heads, Cylinder Heads
A must have upgrade for any spring upgrades resulting in higher FPS or higher rate of fire (RPS) set ups. This category includes items like Titanium Piston, Teflon Cylinder, Polycarbonate Piston Head, Silent Piston / Cylinder Head Set

Upgrade springs for AEG gear boxes from M100 to M150 or 170% to 310% by Systema, Deep Fire, ICS, and Classic Army. Full range of FPS requirments for power or rate of fire. And important spring guide rods for more efficient compression.

Full line of Airsoft AEG Complete, Shell, & Partial Gear Boxes as well as Full Tune Up Kits (FTK). For an easy upgrade drop in gear box or replacing a broken gear box.
Mecha Boxes by Systema, Deep Fire, and ICS.

Airsoft AEG Gears, Gear Sets, Gear Box Ball Bearings, Gear Box Bushings, Gear Box Shims, Tappet Plate.
Perfect for Airsoft AEG upgrades or basic maintenance for replacement flat gears or bushings.
By Systema, ICS, & Deep Fire

Airsoft AEG Tight Bore Precision Barrels by Systema and Deep Fire. Designed for tighter grouping, higher accuracy and FPS (Feet per Second). Standard barrels are 6.1mm and up. Precision barrels are usually designed from 6.04mm and smaller. Increase in BB velocity is about 10 -20 FPS, significant improvement in grouping, accuracy and range.