KJ Works Hi Capa GBB (KP-08): specs, joules & FPS

Complete specs KJ Works GBB (gas blowback)

KJ Works Hi Capa GBB (KP-08): 0.98 J, 325 FPS, 940 g, 30 rounds. Full specs from the official source, with FPS for every BB weight.

Power

Energy · computed0.98 J
Velocity325 FPS99 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

BrandKJ Works
ModelHi Capa GBB (KP-08)
CategoryPistols
Power sourceGBB (gas blowback)
Platform1911
Weight940 g
Length220 mm
Magazine30 rounds
Hop-upAdjustable

Weighs 940 g: heavier than 69% of GBB replicas in the same category in the database (466 with weight).

At 0.98 J it is more powerful than 95% 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
G&G GX45 MkV1 J328930 g
Novritsch SSP2 Gen2 GBB1 J–957 g
AW Custom NE30 1911 Iconic GBB1.01 J330960 g
AW Custom NE30 1911 Iconic GBB - 2 Tone1.01 J330960 g
KJ Works 1911 GBB0.89 J310940 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 g32599
0.25 g29189
0.28 g27584
0.30 g26581
0.32 g25778
0.36 g24274
0.40 g23070

Theoretical calculation at constant energy (0.98 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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