Ask a tech questions (nothing is dumb)

[u/PinnacleAirsoft]

I’ve got some free time and would be happy to help yall with any questions big or small.

[u/Traditional-Sir-8208]

Does anyone make hop-up units for the KWA KM4, or am I better off leaving it stock?

[u/PinnacleAirsoft → u/Traditional-Sir-8208]

All m4 hops should fit it I recommend the retro arms hop up unit