[KM Planning] Stainless Steel Machined Curved Hop-Up Arm for Marui VSR Air Rifles [DNRVSRCHA]

Domestically developed, domestically manufactured, and made in Japan

[DNRVSRCHA] DNR compatible with Marui VSR series

SUS machined curved hop arm (compatible with KM chamber)

This is a machined SUS (stainless steel) hop arm compatible with Tokyo Marui VSR series air rifles.
The biggest feature is that the hop adjustment groove is not a straight line but a gentle curve of Φ395mm, which allows for more precise and linear hop adjustment than conventional straight groove arms.

✅ Product Features

Φ395mm curved adjustment groove
The hop-up adjustment changes gradually compared to the conventional type, which rises linearly.
It is easy to fine-tune and match the trajectory to the desired one.

+0.25mm offset correction for hop adjustment amount
In genuine comparison,
・Additional pressure of +0.25mm even at the weakest position
・Additional pressure of +0.25mm even at the strongest position
→This ensures that even light bullets have a reliable hop and that even heavy bullets have a long trajectory.

High-precision machined stainless steel structure
The stainless steel material is cut with high precision, so there is almost no deformation or wear, and it maintains stability even after long-term use.

Precise tuning of adjustable groove width
The groove width for the hop-up projection is approximately 2.6mm compared to the stock, but this product is slightly wider at just over 2.5mm, improving the projection position accuracy and left/right balance.

Zero tolerance mounting hole design
The mounting holes are made with absolutely no play,
Although the accuracy of the fastening to the zinc shaft of the gun body is very high, some adjustment by filing may be necessary.

✅ Compatibility and Recommendations

Compatible models: Marui VSR-10 series, G Spec, Pro Sniper, etc.

Recommended chamber packing: Designed to be used in conjunction with KM Kikaku products.
If you use packing from another manufacturer, slight adjustments and compatibility checks may be necessary.

✅ Recommended for these users

VSR users who want to fine-tune the hop-up

Precisionists who want to float heavy bullets (0.28g to 0.36g, etc.)

Those who want stable trajectory control in combination with a custom chamber

Achieves precise hop adjustment performance that cannot be achieved in a straight line.
This high-precision arm is a core part for those aiming for "next-level VSR tuning."