Descrição

CNC Steel Cylinder for AEG by ASG ULTIMATE
The ULTIMATE CNC Cylinder is built for ideal air compression in AEG setups. It’s made from seamless drawn 45C steel with a hardness rating of 20–25 HRC and treated with isonite oxidation for low friction and corrosion resistance. Thanks to precise CNC machining, the cylinder features a smooth inner bore and external grooves for improved heat dissipation.ASG manufactures various cylinder types with specific hole shapes and positions depending on the inner barrel length. This ensures maximum air efficiency and optimized performance for each configuration. The cylinder has been tested for durability under high-stress use with a variety of springs. When choosing a cylinder, barrel length is key, but for accurate Volume Ratio, it’s also important to consider BB weight and piston mass to avoid Joule Creep.

Key Features

Seamless steel construction – maximum strength and dimensional stability.
CNC-grooved exterior – enhanced cooling and weight reduction.
Isonite surface treatment – corrosion resistance and friction reduction.
Precision inner dimensions – better sealing and increased efficiency.
Type marking – easy selection based on barrel length.

Barrel Length Cylinder Type Table

TypeInner Barrel LengthHole Design

B (1/2 Hole)
201–250 mm
ASG logo outline

C (3/4 Hole)
251–300 mm
ASG logo outline

D (4/5 Hole)
301–400 mm
ASG logo outline

E (Tip Hole)
401–451 mm
1/2 ASG logo outline

0 (Closed)
451 mm and above
No hole

A (MP5K/PDW)
101–201 mm
Narrow longitudinal slot

LMG / CA25
451 mm and above (extended gearbox V2.5 / PSG-1 / L85)
No hole

Technical Specifications

For barrel length: 451 plus mm
Material: Seamless drawn 45C steel
Hardness: 20–25 HRC
Surface finish: Isonite (black)
Exterior machining: CNC grooves for heat dissipation
Weight: 34 g

Package Contents

ASG ULTIMATE CNC Steel Cylinder