The Magpie -- Double Action Nerf Revolver (Half Dart)

Are you sick of priming your hammershot? Do you love revolvers, but find yourself dissatisfied by the fact they aren't actually double action?
Then I have the blaster for you: The Magpie.
It's a semiauto, double action, nerf revolver, that shoots short (~36mm) darts. It holds six rounds in a side drop cylinder, and the cylinders can be fixed, or they can be swappable. It can be either trigger fired, or hammer fired.
I recommend using a 1000mah nanotech 3s for this blaster, but it can theoretically fit even a 1500mah battery in the grip. Smaller would work too.
New variants, such as the long dart version, will be uploaded separately and linked here later.

THIS IS NON-COMMERCIAL, so don't go selling them without permission. If you'd like to make arrangement to sell, just contact me and we can work something out. That includes commissions and one offs.
Performance is what you'd expect from a Flywheel the World system, about 110 fps with MTB Honey Badger motors on 3s.

Things to note:

-The "trigger sear" and "indexing arm" must be printed in PETG. I've tried other materials but that worked the best. There is also a two part version that can use TPU and PLA, and has been looking quite promising in my testing. EITHER WILL WORK, so pick what you think is best.

https://roboman.ecwid.com/Delrin-Indexing-Arm-Trigger-Sear-for-Magpie-p198983018
For those that may be looking for a more premium or reliable option, there are laser cut Delrin/Acetyl sears and arms available here, for a very low price!

-The "indexing arm" seems to be slightly more robust and long lasting than the "trigger sear" but I would recommend printing extras of both and keeping them somewhere with you in the event of a break. It's relatively easy to install them, but they are both critical parts, and the highest wear.
-There are two trigger files. The hook trigger will need a shorter spring than what is listed in the assembly guide, but should be easier to use.
-When using, take time to get familiar with the feel of operation. If the trigger binds, and you try to force it, the sear or the trigger can break.
-When printing pick the handedness folder, and then pick the front length. There is also an optional frame piece that allows you to load two of the chambers from the side without dropping the cylinder.
-In the right hand files, things are labeled left and right improperly. I may fix it one day, but I'm also lazy.

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1.1, which is small quality of life upgrades. I added tracks into the frame so that the screws that hold in the sear and arm can travel more freely. This is also critical if you're going to be using the Roboman indexing arm, as it does not have room for the screw without modification.

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10-13-20 update, specifically adding new right hand parts that are updated to be easier to assemble and work more reliably. The big change is a sleeker design on the pusher, which makes operating the blaster feel much much better. This new pusher does require a matching frame piece, but other than that it should be drop in. All the front parts have been revised to take a threaded barrel and gasblock, so you won't need friction or glue or anything to install those now. The barrel turns counter clockwise, because of a minor error in editing I didn't catch. If there is sufficient interest, I can upload left hand barrels for the threaded parts, but unless I specify otherwise, future updates on this platform are for the right hand verison only.