I have one of those. Never have used it. I had a part fall out and can't figure where it goes. I only have one mag for it.I was toying with the idea of getting a GSG Firefly with all you guys posting them but decided to go a different route.
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Picked up one of these. Its a G19 conversion kit. Was cheaper than a GSG Firefly and no paperwork - so to me it's a win!!
Just got it today and checked it all out. Looks to be well made. Going to get it out tomorrow and take it for a spin.