Matrix MP5 Type Metal Flashhider with Threads for Airsoft AEG (14mm Negative)

"For those of you wondering, you can bodge this onto the new Avalon MP5. It'll take some fitting, though. You have to bulk up the threads on the outer barrel with a few layers of electrical tape, since the thread diameter on this flashhider is larger than the thread diameter on the outer barrel. You'll also have to use a round file or dremel to enlarge/deepen the indents for the front sling loop. After that, you'll want to increase the diameter of this flashhider with a few layers of electrical tape to ensure that it sits snug in the front sight assembly. Once all that is done, you can reassemble. Bear in mind that you likely won't be able to completely screw the outer barrel into its chamber/base. Not to worry though, if you shimmed the flashhider well with electrical tape, the whole front end will be just as solid as before.

It sounds like a lot of stuff, but it took me less than 10 minutes. Don't sweat it.

Pro:
Arrived as described.
Fits the Avalon MP5 with simple modifications.

Cons:
Does not include a thread protector.
Not a drop-in fit for the Avalon MP5 (but isn't advertised as such, so not a big deal).

"Okay so it a solid build and it fits any 14mm silencers or even the MP5 flashhider extension beautifully...
BUT! You need to purchase the adapter to attach it to an MP5k, they also sell this at evike as well, just search MP5 adapter I believe.