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Cylinder head AEG 70sh Mk.II universal V2/3 - medium size View larger
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EPeS Cylinder head AEG Mk.II uni V2/3 - Medium - 70sh

Revolutionary upgrade part for AEG weapons by EPeS!

CNC metal cylinder head MK.II for gearboxes V2/3 in the standard length for nozzles 20 - 24 mm. 

The cylinder head has retention notches to limit play at the front of the gearbox, helping to solve feeding problems.

Impact rubber hardness 70sh to AEG M130 springs!

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E301-M-70

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    CNC machined dural EPeS HET nozzle will blow away the maximum from your gun! Modified front for perfect sealing between the nozzle and rubber, 2 o-rings for sealing on the cylinder head nose, and excellent smoothness thanks to the H+PTFE surface treatment. Available in various lengths precisely for your setup, precisely for your satisfaction!

    8,10 € 9,00 €
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CNC Cylinder Head MK.II from EPeS sets a new standard for quality and performance, featuring a unique design solution.
The cylinder head fixation using screws in its part prevents any unwanted movement of the head in the gearbox during firing. The innovative design allows for a longer nozzle guide travel to achieve maximum sealing of the nozzle around the hop-up rubber collar.
Unique surface treatments H+PTFE ensure a smooth nozzle movement and excellent smoothness. The construction made of aircraft-grade aluminum along with the H+PTFE surface treatment also ensures high durability of the parts.

The Cylinder Head MK.II is available in the following versions:

1. Based on the nozzle diameter:

2. Based on the nozzle length:

  • Short (for nozzles with a length of 17 - 20 mm, e.g., CZ EVO)
  • Medium (for nozzles with a length of 20 - 24 mm, e.g., M4/16, AK long, M249, G3, MP5, ARP9, MK48)
  • Long (for nozzles with a length of 24 - 32 mm, e.g., SR-25, AUG)
  • Extra Long (for nozzles with a length of 32+ mm, e.g., M60, SCAR-H, CZ BREN, VZ.58)

3. Based on the impact surface:

  • Without stop (suitable for attaching Sorbopad with hardness tailored to the weapon's performance and length for proper engagement of the gears on the piston - AOE)
  • 3mm Impact Rubber 70sh (for springs in standard AEG up to M130, machine gun up to M120, DMR up to M140)
  • 3mm Impact Rubber 80sh (for springs in standard AEG up to M160, machine gun up to M150, DMR up to M170)
  • 3mm Impact Rubber 90sh (for springs in standard AEG M170+, machine gun M160+, DMR M180+)

Versions with special impact rubber (70, 80, 90sh) of our own design improve airflow and are made of durable polyurethane for maximum durability and piston impact absorption.
For high cadence and high-capacity weapons (typically machine guns) where continuous firing of long batches of 100+ BBs is expected, we recommend choosing a spring with one level less force for the given hardness of the impact rubber (e.g., for 70sh hardness, choose a spring max M120)
Conversely, for DMR and AEG snipers, where single-shot firing with a longer delay between shots is expected, you can choose a spring with one level higher.

Main advantages of the CNC Cylinder Head MK.II:

  • Increased Nozzle Guide Travel:
    Allows the use of a 1 mm longer nozzle, ensuring improved sealing between the nozzle and hop-up rubber during firing. It also eliminates potential feeding issues while maintaining perfect sealing between the nozzle and hop-up rubber. This innovation is particularly appreciated by owners of V2 gearboxes; V3 gearboxes are already designed with a larger nozzle guide travel compared to V2.
  • Unique Cylinder Head Mounting System in gearbox:
    This is truly a universal cylinder head for V2 and V3 gearboxes from various manufacturers. Thanks to the defined clearance between the head and gearbox, you can customize the cylinder head to fit any gearbox. This ensures smooth operation of the entire air system with no loss of performance and other issues leading to premature wear of parts.
    Improperly seated and wobbling cylinder heads allow too much axial deviation of the nozzle, resulting in various problems (performance loss, inconsistent performance, nozzle jamming in the hop-up chamber, feeding problems, etc.). Lastly, uneven contact of the piston head with the cylinder head stop, which can lead to the destruction of the piston head and, consequently, the piston. Holes for gearbox retention pins designed for optimal fitting into CNC gearboxes from Retro Arms (except for NGRS), so it does not require installing retaining pins with CNC gearboxes RA.
    The manufacturer recommends applying adhesive to the threads for the retaining pins.
  • New MK.II Version:
    Compared to the Mk.I version, surface treatment H+PTFE has been added, the length of the nozzle guide has been extended, the diameter of the nozzle guide has been modified, and the impact rubber has been redesigned for better energy distribution upon impact.

Package Contents:

  • 1× Cylinder head fitted with two sealing O-rings (21×1.5) with or without a stop, depending on the version
  • 2× Fixing screw M3×2
  • 2× Fixing screw M3×3

Caution:
It is strongly recommended to secure the screws with adhesive of high strength!

ColorGrey
Body/receiver materialMetal