FX fx impact m4 first 10 shots are slow

[Xono]

I dispatched following parts to Croatia, US and UK to fix slow shots problem in M3 and M4. My personal M3 is also fine since I installed this part. So far every friend using it has no complaints. YouTube video is also available.

FX should have fixed this issue much earlier.

View attachment 515776

I would like to purchase 2 pcs from you, can you send me a PM? I cannot pm yet.