KSC CZ75 2nd Version Heavy Weight GBB (Japan System 7 Version): specs, joules & FPS

Complete specs KSC GBB (gas blowback)

KSC CZ75 2nd Version Heavy Weight GBB (Japan System 7 Version): 0.73 J, 280 FPS, 840 g, 23 rounds. Official specs.

Power

Energy · computed0.73 J
Velocity280 FPS85 m/s

Within Italy's 1 J limit

Energy computed from the velocity with 0.20 g BBs, the standard weight manufacturers and shops use to measure FPS.

For information only, based on the source's data for this version. Not legal advice: always check current local law and the version the shop sells.

Technical specifications

BrandKSC
ModelCZ75 2nd Version Heavy Weight GBB (Japan System 7 Version)
CategoryPistols
Power sourceGBB (gas blowback)
PlatformCZ75
Weight840 g
Length235 mm
Magazine23 rounds
Hop-upAdjustable

Weighs 840 g: heavier than 56% of GBB replicas in the same category in the database (466 with weight).

At 0.73 J it is more powerful than 14% of GBB replicas in the same category that stay within 1 J (351).

Similar alternatives

Same type and category, with similar power and weight.

ReplicaEnergyFPSWeight
KSC CZ75 1st Version GBB (System 7) - Japan Version0.73 J280750 g
Tokyo Marui AM .450.73 J280735 g
VFC SA 320T0.81 J295798 g
Umarex HK P8A1 Green Gas (by VFC)0.84 J300820 g
ICS BLE-ICP0.84 J300805 g

Velocity with different BB weights

At the same energy, heavier BBs leave the barrel slower. Expected velocity with the most common weights:

BB weightFPSm/s
0.20 g28085
0.25 g25076
0.28 g23772
0.30 g22970
0.32 g22167
0.36 g20964
0.40 g19860

Theoretical calculation at constant energy (0.73 J). Real-world values can differ slightly with hop-up and replica.

Try other values in the joule ↔ FPS converter →

Data source

The values on this page come from the product page of the shop redwolfairsoft.com, checked on 2026-11-07. The manufacturer does not publish full specs: values may refer to the version that shop sells.

Shop product page ↗ redwolfairsoft.com

Spotted a wrong or missing value? Let us know.

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