Rating: 5/5
Cons: Doesn't Pay My Taxes, Fitting Required
Best Use: Field or Mid-Range
Bought at: Airsoft Sport Unlimited
Great job Guarder on making durable parts. I have had this kit in my gun for well over 50,000 rounds and have yet to see any part break except for 1, the piston head.
Let's start with the bushings. These have thick rims to them, and some gears will grind if you use them with the bushings. They have double oil rings inside to hold lube and keep the gear axles friction-free for the most part.
Speaking of gears, these ones are like Timex, they take a lickin' and keep on tickin'. They are strong suckers, silent, and easy to shim if you know how, though the sector gear may touch the bottom of some pistons.
The piston is awesome, but not the toughest on the market. It's a polycarbonate so it won't last forever, but it lasted about 40,000 shots before I got a replacement one. Be sure to correct for Angle of Engagement (AoE).
The piston head has a very minute crack that I did not want to risk after about 40,000 shots, so I got an aluminum head which works fantastic. While it worked, it was nice and provided excellent compression. It did not warp or break and had a bearing. Be sure to tighten it well or it will fall off in your gearbox.
The spring gets 400 fps consistently, but it has gone down to about 395 in my m16. I tested it the day I wrote this review, which is also the same day I posted the demonstration. I have had this in my gun for many months. I bought the M16 kit and it had a solid, type 0 cylinder that has no port. It is shiny on the inside but looks like it has a coating that could wear off, be sure to lube it a little.
The spring guide is well made and won't crack or break easily, the same with the cylinder head which has dual o-rings. This head has taken a beating from a 500 fps spring and still no damage to the pad or the steel. The nozzle even has an o-ring that provides great compression seal.
The tappet plate has not broken despite being in contact with non-silicone grease the whole time it's been in my gearbox.
The shim guide on the FTK's box is horrible. Don't go by it, but instead go onto an airsoft forum and browse the shimming guides or have it professionally installed. Also, they didn't ship enough shims with the kit, so I recommend getting some .15mm, .30mm, and .5mm shims as well.
Overall, I recommend this to all of you who know how to work on your gearboxes. This kit will not let you down.
Demonstration of FTK working together:
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