VFC VR635: specs, joules & FPS

Complete specs VFC GBB (gas blowback)

VFC VR635, GBB: 1.44 J, 394 FPS, 2,391 g, 30 rounds. Full specs from the official source, with FPS for every BB weight.

Power

Energy · computed1.44 J
Velocity394 FPS120 m/s

Above Italy's 1 J limit

Italian shops sell versions tuned below 1 J: ask the shop which version they ship.

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

Velocity declared in m/s by the source and converted to 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

BrandVFC
ModelVR635
Manufacturer codeVF2-M4_635_XS-BK81
CategorySMGs
Power sourceGBB (gas blowback)
PlatformAR15/M4
Weight2,391 g
Length (collapsed / extended)630 / 715 mm
Inner barrel250 mm
Magazine30 rounds

Weighs 2,391 g: heavier than 57% of GBB replicas in the same category in the database (67 with weight).

Similar alternatives

Replicas of the same type and category that stay within the Italian 1 J limit.

ReplicaEnergyFPSWeight
VFC Umarex HK MP5K1 J3282,350 g
VFC Umarex HK MP5K Early Model1 J3282,350 g
Umarex Beretta PMX SMG GBB (by KWA)0.95 J3202,400 g
VFC MP5 A5 V2 GBBR1 J3282,830 g
KSC VZ61 Skorpion GBB (HW)0.84 J3001,550 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 g394120
0.25 g352107
0.28 g333101
0.30 g32298
0.32 g31195
0.36 g29490
0.40 g27985

Theoretical calculation at constant energy (1.44 J). Real-world values can differ slightly with hop-up and replica.

Try other values in the joule ↔ FPS converter →

Data source

Every value on this page comes from the manufacturer's official product page, checked on 2026-11-07.

Official VFC product page ↗ vegaforce.com

Spotted a wrong or missing value? Let us know.

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