Matrix AK to M4 Conversion Key Adapter (For AK Airsoft AEG to use M4 Series Front End)

"Decent product, however quality control needs to be assessed. In order to install into a cyma cpw I had to shave 1/16 of material or so off the back side near the hop up mounting location as it was hitting the gear box and causing the front end mounting locations to be misaligned. Additionally, the stock cyma hop up unit wont mount flat either, causing feeding issues. To remedy, I will need to file more material off of the part. All these annoyances aside, it does what its supposed to. Just be prepared to do some extra work to make it all function properly.

"This is a good idea but after a while the threading will strip from tear down/cleaning/modding. Should come with its own set of screws since the stock AK screws are to long and will need to be shortened. Fitting was fine on the receiver where holes did match up properly on my CYMA AK 47 but will not work on CYMA AK 74s with the locking mechanism for the side folding stock since this conversion kit wants to sit flush in the receiver.

Overall 3 stars, good attempt but needs to be reworked.

"So, this thing is pretty cool to make your AK unique. I love the concept, however the execution was horrible.

Pro's:
Somewhat simple to install
Gives the player the ability to stand out in the FIeld.
Accepts most M4/M16 front ends.

Con's:
Will need a drill and a drill bit to extend the chambers of the screw holes.
Be prepared for a Lowes trip to replace stripped screws.
Cannot use with DG/TNK Kits

I would say if you have the experience and tools, buy this. Otherwise, stay away from it. This thing has been a headache for me and my team since we got it. Almost wanted to return it, but decided to push forward with the build.