I know this is an older post but how has it been working?

 

great! has survived many fast mag changes and never gets loose

 

Thank you.

 

Looks like it should work great. It dose not look too out of place either like some of the AR mag funnels. They just look ridiculous.

 

Using MP5’s in comps is always a head turner

 

Shot mine in an IDPA match just for hoots.....Came in 2nd out of 80 shooters.
Ran like a champ.
The 3D printed mag well from another business is less than optimal for any type of use, fell off at the first mag change.

 

Looking to pick one of these up. Anybody else can chime in on their experience with it ?

Do I need to modify it to fit sp5k ?

 

you might need to file the inside of the haga magwell to get a good mag fit.

 

Bummer man, for $100 u would think they would sort that thing out for you!