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Manufactured by: Retro ARMS

Retro ARMS CNC V2 Hop-Up Chamber PRO (RETRO-9426)

Manufactured by: Retro ARMS

Retro ARMS CNC V2 Hop-Up Chamber PRO (RETRO-9426)

Weight: 0.1 lb

Model: RETRO-9426

Regular price $55.00
$55.00 Sale price Regular price
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This PRO version features an adjustable feed neck and includes feed neck shims.

This Hop-Up chamber features a new pressure adjusting system. Basic plastic gears were replaced for a single large POM one. The adjustable gear has a serrated surface for better fine tuning and eliminates slipping.

A collet tightening nut is placed in front of the Hop-Up chamber, which allows for barrel stabilization.

To install, simply put the inner barrel with a bucking into the Hop-Up chamber, seal it with C-clip lock, and screw the collet nut with 10 mm wrench into the chamber. The collet nut is manufactured from 7075 aluminum and after screwing of the nut, it will hold inner barrel tightly. Do not use too much force to screw the collet nut, otherwise you will damage it and the inner barrel will overturn. The sign of correct tightening is less space of a gap on the collet nut.

Includes a C-clip.

product details

This PRO version features an adjustable feed neck and includes feed neck shims.

This Hop-Up chamber features a new pressure adjusting system. Basic plastic gears were replaced for a single large POM one. The adjustable gear has a serrated surface for better fine tuning and eliminates slipping.

A collet tightening nut is placed in front of the Hop-Up chamber, which allows for barrel stabilization.

To install, simply put the inner barrel with a bucking into the Hop-Up chamber, seal it with C-clip lock, and screw the collet nut with 10 mm wrench into the chamber. The collet nut is manufactured from 7075 aluminum and after screwing of the nut, it will hold inner barrel tightly. Do not use too much force to screw the collet nut, otherwise you will damage it and the inner barrel will overturn. The sign of correct tightening is less space of a gap on the collet nut.

Includes a C-clip.

Customer Reviews

Based on 2 reviews
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I
I.W.
Works Perfectly

Installed on a Cyma Platinum M110
Relevant parts used:
SHS G36 length air nozzle
Lambda 6.01 Tightbore
Modify Flat hop Bucking
Elvish Tac R-Hop Patch for Lambda 6.01
Cyma Polymer SR25 magazines (the ones with a clear window on the top)

I installed the Rhop and chamber this past weekend using the TDC Trolley that came with the unit. My Rhop installation was less than perfect so my shots were hooking right consistantly. For the first time I had the rare experience of low accuracy, High precision. My shots were not true to the point of aim (my fault with the Rhop Installation) but very consistant and would impact with a tight grouping.

The assembly of the unit is very easy. An exploded view diagram can be found online. The parts that need to be CNC machined are, and the small parts like the hop arm and TDC Trolley are not. The Dial has good resistance and is also plastic, but seats well and stays in place.

Only Con I have is that it only has a TDC option for RHop. Not an issue for my setup, but I can see how others may want one for hop nubs.

Fed every shot, had amazing air seal.

TLDR, if installed correctly it does it's job excellently.

A
A.
Built great, but...

Hop up unit is too long for my zci outer barrel, cannot properly close upper and lower receiver, thought maybe the centering block was too large, no. The locking ring has left indents on the mating surface of the outer barrel (no biggie) but it tells me that the hop unit is too long to properly fit in the gun. Not sure what it does fit, definitely does not fit a vfc receiver with an aftermarket outer barrel.

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