Epes Hop-up chamber M60/PKM

Top-notch hop-up chamber for M60 and PKM machine guns for maximum performance and accuracy of your weapon.

The unique construction for the use of standard AEG hop-up rubbers, combined with a perfect design and many improvements for maximum performance, reliability and user comfort, will allow you to get the most out of the weapon.

Precision production on CNC machines and H+PTFE surface treatment ensure the highest quality and durability. The unique design, which is the result of a long development, offers a combination of high performance and simple operation.

• Designed for M60/PKM A&K, Cybergun and others
• Fine adjustment of the hop-up pressure - 360° range of the control wheel
• Marked direction of hop-up regulation
• Perfectly tuned and long developed internal fit shape for the hop-up rubber collar - successfully tested with most available hop-up rubbers on the market
• Fitting construction for AEG hop rubber bands with a standard collar length (e.g. Systema), for use of a hop-up rubber band with a longer collar, the included spacers can be used - more about the issue of the collar length of the hop-up rubber band in the article
• Delineation of the clearance of the hop-up chamber in the opening of the gearbox using the enclosed O-rings of two sizes
• Vertically seated hop-up rubber pressure - works great with Maple Leaf hop-up rubbers
• Exchangeable pin for axial locking of the hop-up chamber in the feeder - if necessary, a longer pin can be installed to ensure a perfect fit
• Made of aviation duralumin EN AW 7075-T6 with H+PTFE surface treatment
• Made in Czech Republic

Package contents:

• Hop-up chamber
• Hop-up pressure regulation ring
• Fitted hop-up pressure roller
• 2x safety O-ring of the regulation ring (9x1.5)
• 2× O-ring to limit the clearance in the chamber housing in the gearbox opening (6×1 and 9×1)
• 2× distance washer of the hop-up rubber collar (0.1 + 0.2 mm)
• 4× worm for attaching the barrel in the hop-up chamber (M3×5)
• Longer pin of the axial locking of the hop-up chamber in the feed shaft

Perfect fitting for the hop-up collar

The shape of the internal fitting for the collar of the hop-up rubber fundamentally affects the resulting trouble-free function and performance of the AEG gun. That's why we gave the highest priority and tens of hours of testing and adjustments to the development of the most optimal geometry.

However, the result is a universal geometry solution that gets along with the vast majority of available hop-up rubbers on the global market. Testing was successful with more than 30 types of hop-up rubber bands. The fitting is designed for the trouble-free use and good sealing of AEG hop-up rubber bands with a standard length collar. In the case of using hop-up elastic with a longer collar, the enclosed spacers can be used.

Great emphasis is also placed on the quality of production and the quality of the surface, not only of this essential inner part of each hop-up chamber.

Perfect storage of the chamber

The second factor that fundamentally affects the performance and function of the AEG weapon is the storage of the hop-up chamber in the outer barrel fitting and in the gearbox. A chamber deviated from the imaginary axis of the cylinder head - nozzle - chamber - barrel causes a drop in performance and problems with feeding or even throttling the weapon.

The supplied O-rings of different sizes can be used to define the clearance of the hop-up chamber in the opening of the gearbox and therefore to seat it in the axis.