Gameface Trion M3 Bolt BCAR

The Trion is a blaster that comes as a neat package configurable for a variety of games out of the box but doesn't include a muzzle device. 7.5 degrees was specified as a middle-ground twist ratio that isn't excessive for 200 FPS, is well tuned for about 160-170, and at least shouldn't cause issues at 130 FPS. Do note that I've had some dart-related inconsistencies with my own Trion (with two spacers) with this device, so be judicious about the ammo you pick and maybe run without it if you're going for the community dart bin.

Derived from Chance's Trion BCAR, but a bit stubbier (about the same length as the packaged faux flash hider) and it takes M3x12-14mm bolts to secure the bearings instead of pins. Still uses nine 3x7x3mm F683ZZ bearings, with the flanges meant to be installed on the clockwise side of each insert. Print front-side face down, no supports necessary.