Knight Armament Licensed QDSS NT4 AceTech Predator AT2000R Tracer Unit w/ VFC QD Mock Suppressor & Steel Flash Hider

"Very nice KAC replica. Little shorter than the real one I think. Works well with my PTW and keeps up. Bought this to help when training with night vision since I use airsoft for training (much easier at night than live rounds).
You could remove the tracer unit and fill it with foam (cut 1/4" pieces and insert them 1/4" apart - works well with HPA rifles and shorter AEGs/PTWs that have a snap at the muzzle). Very good for training too as we can see our shots and replicate our rifle lengths. Charging system is nice - no batteries to purchase. The front unscrews so it's easy to get to.

"I bought mine about a year or so ago and love it , it looks good on most guns and works great, probably the most effective tracer

"this tracer unit is a must have for night games. the green bb's glow bright with the uv light and the red bb's still glow but much dimmer but this is great for keeping everyone else from tracking your shots. reds are best used with night vision devices for this tracer unit.
the tracer opens up from the front so you can pull out the battery and electronics. this is actually great if you want to use the hollow area as a suppressor for GGB rifles or you could remove the front cap and use the empty space to make your shots sound louder as a makeshift amplifier. the tracer unit keeps up with 30rps no problem and i suspect even faster builds despite what is advertised.
using the QD makes removal of the tracer unit much quicker for transitions from night to daytime games. the QD mounting does have a little play but not enough to cause any problems. I fixed the back and forth play with a little bit of electric tape although the tracer unit does still have some rotation play about 1-2mm so that's that.
so far this one seems like a step up from the fixed acetech 1000 and i like the new look.