VFC Umarex HK MP5K: specs, joules & FPS

Complete specs VFC GBB (gas blowback)

VFC Umarex HK MP5K, GBB: 1 J, 328 FPS, 2,350 g, 30 rounds. Full specs from the official source, with FPS for every BB weight.

Power

Energy · computed1 J

Velocity328 FPS100 m/s

Exactly at 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.

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.

licenza Umarex

Weighs 2,350 g: heavier than 52% of GBB replicas in the same category in the database (67 with weight).

At 1 J it is more powerful than 71% of GBB replicas in the same category that stay within 1 J (21).

Same type and category, with similar power and weight.

Replica	Energy	FPS	Weight
VFC Umarex HK MP5K Early Model	1 J	328	2,350 g
G&G SMC-9	1.01 J	330	2,150 g
VFC MP5 A5 V2 GBBR	1 J	328	2,830 g
Umarex MP5K Early Type Gen 2 GBB SMG (by VFC)	1.01 J	330	2,340 g
Krytac KRISS Vector SMG GBB	1.04 J	335	2,300 g

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

Theoretical calculation at constant energy (1 J). Real-world values can differ slightly with hop-up and replica.

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

Spotted a wrong or missing value? Let us know.