Angel Custom 12mm+ to 14mm- CNC Steel Adapter for KWA/KSC MP7 Series Airsoft GBB

"This adapter works well. However be aware that most of the MP7's today come with one in the box. So theres no need to buy one in advance

"Does exact what you expect it to. Enough clearance for any barrel extension I can think of.

"I just purchased this for my JG SIG 551 because it has a 12+ thread. Well this thing fits and now my gun looks even better! Get this if you have a SIG with the 12+ thread, it will convert it to 14- so you can attach a suppressor or a different flash hider. Great product!

"Fits perfectly on my KWA MP7. Not much else to really say other than I feel the price is a little steep.