ARCHWICK B&T Licensed APC9K Gas Blowback Airsoft SMG
(Model: Kurtz)

"For a replica about the 550 price point, I must start with some reasonable nitpicking.
Places for improvement:
- The charging handle return spring is sufficient to return it to a good stopping point, but not all the way back to its original position. This is not a big issue and can be safely ignored.
- The handle part of the charging handle has similar issues: After using it, the handle part would fold back to a good position almost all the time, but there are occasions where you have to use your thumb to nudge the handle part to the original position
- The iron sights are very, very challenging to install. Unlike the usual backup sights, where you can just untighten the screw and put it on directly, this APC9K(SD2)'s backup sights will require you to slide those in: slide the front sight in from the front end of the rail and slide the rear sight in from the back end of the rail. The backup sight installation was quite painful, but I can't say if this is true for all units.

Now we can talk about the good part:
- It has a good weight; in fact, it is only around 2100g (4.63 lb) with the magazine.
- Mag has no wobble as expected.
- Stock has no wobble as expected.
- The replica also comes with an extended outer barrel piece (suppressor).
- Good news, if you don't want the tri-lug adapter or would like to attach other standard 14mm- muzzle devices, there is a 12mm to 14mm- adapter inside the box as well (at least in my box).