BT-4 Iron horse
Ricochet AK loader
specter one point sling
BT magazine expansion chamber
I bought this grip because the stock trigger on the BT-4 is crap.
Right away I overtightened the screws on the grip and one of them tore through the rubber.
Mine is made of metal, but they know make a composite version. I will say this though, I stripped out a screw hole on the stock grip (which is composite) taking off the grips, so given the amount of opening and closing of the grips you are going to have to do, I'd say stick with the metal, despite the weight.
With fresh batteries, the E-grip shot very consistently. I tried all four modes.
They are 1/13 bps ramping, and 10/13 bps full auto. To change modes you have to turn the e-grip off, open the grip, flip the dip switches to the setting you want, and then turn the e-grip back on. Also there is a jumper that can make the e-grip semi-automatic.
When the battery starts to die, it fires off a few shots and then clicks away. A low battery indicator would have been nice.
On the back of the grip is an on/ off button that is push activated. I found it was simple to turn on with or without gloves.
There is also a light that blinks every time the marker fires.
My only real gripe with this product is the grip. it's thin, and cheap, and the battery makes it bulge. It is very unlike the stock grip, which is nicely contoured and solid. And to make matters worse the screw holes aren't the same so you can't fix the problem with after market grips.
I hope they make upgrades for the board, like 3 or 6 shot burst, and it would be even better they controlled mode of fire with an external lever, but hey, it's still pretty decent.
I can get over the cheap grip. Excellent product. But I'm still subtracting one point because it could be improved, and one point for the POS grip.