Hop-Up chamber for AK airsoft replicas. This new Hop-Up Chamber is made of EN AW 7075 aviation dural, which has similar strength to steel and the weight of aluminum, so it is the best material for use. The chamber is milled on a CNC milling machine and also has a 5µm (0.005mm) silver protective anodizing.

We build this Hop-Up Chamber on test results, so this chamber is precise and custom built for the best power and performance. We changed the drilling depth, so with the 20.1mm nozzle and 60 Shore Hop-Up bucking, we were able to achieve stable performance over 16m / s over the spring force. Feeding with a heavy weight of 0.43 BB on SEEDS and AUTO was also without any problems.

retroarms-klestinova-matice-cnc-airsoft-new-gen It is located in front of the Hop-Up Chamber. You will simply install the inner barrel with the bucking hop-up into the chamber, seal it with the clip retainer, and finally screw it to the hop-up chamber with the collar nut (you will need a 10 mm wrench mm). The caliper nut is made of EN AW 7075 aviation dural and, after screwing in, it will seal the inner barrel very strongly. There is no need for force to install the caliper nut, just easy force, otherwise the inner barrel will flip over into the Hop-Up chamber. A sign of a better seal is the reduction of the space in the caliper.

This Hop-Up Chamber has the best performance with our V3 CNC gearbox, because these parts are built for the best performance together. They are also built to be screwed together, so they hold in a straight line with the inner barrel with no air leaks. You can also use this Hop-Up Chamber with a common ZnAl spindle gearbox.

The Hop-Up Chamber can also be upgraded with the CNC Support Cube, which supports the Hop-Up Chamber in the weapon body and makes reloading very easy.

The hop-up setting is possible with the set lever in the directions: front or rear, depending on your needs. The Hop-Up Spacer is not included, you can use it from your Hop-Up Chamber or you can purchase an upgraded silicone or Teflon one.
This Hop-Up package includes

1 pc Hop-Up chamber for AK (anodized, made of aeronautical dural EN AW 7075)
1 pc Adjustment lever (anodized, made of aeronautical dural EN AW 7075)
1pc Push lever with cut for common spacers (anodized, made of aeronautical dural EN AW 7075)
2pcs M2.5 x 3mm screw (chemical black layout, 12050 steel material)
1 pc M3 x 12mm screw (8.8 strength steel material, chemical black layout)
1 plastic C-Clip lock for AK (ABS material)
1 pcs Plastic pin (ABS material)
1 pcs Rubber O ring (vulcanized rubber)
1 pc Collar nut (anodized, made of EN AW 7075 aircraft dural)

We recommend purchasing our new spacer set, Hop-Up bucking and replacement plastic C-Clip block or collet nut with this Hop-Up Chamber.

The Hop-Up Chamber is delivered unassembled, which means you need to assemble it before use.
Our bucking Hop-Up RetroArms does not need to be sealed with Teflon strap, because it already has surface sealing parts. It is recommended to use ethanol for the installation of our bucking, it will lubricate it, but after installation the ethanol will vaporize and the bucking seal perfectly.

For easy assembly of the spacer, it is recommended to glue it to the push lever with petroleum jelly.

Warning! Do not use oil or petroleum jelly for the lubrication of the Hop-Up components, you could damage them and lose the Hop-Up effect.