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From memory...so it might not be 100%...
1. take off grip
- 2 grip base screws
- don't loose the little disk
- detach motor (note which one is +ve and if it's forward or backwards)
- undo two screws inside grip that hold the grip to the mechbox
- pull grip straight off...watch wires, note which hole (furthest forward) they go through
2. take off stock
- take off butt plate
- Loooong screw driver (philips) to reach into stock to remove screw
- flat head screwdriver to remove little screw on tang
- gently pull stock back and down...detach mini connector when you can get at it
- put stock aside
3. Remove allen screw (just above the hole that the wiring for the stock goes through
3b. Forgot...pop the little plastic cover off the selector lever...undo little philips screw and take the selector off.
3c. Forgor more...in the magwell...undo the philips screw and remove the coverplate. You'll have to tilt it, move it and then twist it to get it out....it's easy when you're actually holding it. Don't force anything.
4. At this point the lower receiver should be able to tilt down and away from the upper receiver...might need to wiggle/jiggle it.
NOTE: There are two semi-circle gears on either side of the mechbox. And a little lever/nub thing that goes with the selector plate and the gear on that side. These will fall off if you don't hold them in position. As you're doing step 4...look for those gears, their orientation and hold them in place.
5. Now you should be able to slide the dust cover, bolt and spring guide straight back off the upper receiver.
Reverse to reassemble. Dropping the gears will get you...go slow. While you have the bolt/spring/dust cover off...take a close look at how the wiring is routed around the mechbox.
Good luck...
BTW. I've always found the screw on the KA RIS cover to be too short. I usually sub in another screw that's longer. Without a longer screw it won't push down on the spring guide block and the RIS will slide forward and back about 1mm.
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