Rival Oring Barrel Adapter + Front Centering Ring

Update 11/17/19: New files uploaded, 7-8_3-4_short_insert. Meant for 7/8"x3/4" orings to allow a thicker wall between the oring and the barrel for easier printing. For the more metric-minded, it'll fit an oring down to around 19mm ID, 22mm is probs what OD you'd be looking for. Also, hit me up if you want one sized for a specific oring or barrel.

Update 11/15/19 preview: I recommend waiting to print the oring portion until I get this update up. I'm moving to 7/8"x3/4" orings in an attempt to get more than a single wall on portions of the inner piece to help it print better on .4mm and up nozzles.

Update 10/30/19: Now includes a piece to help center your dart barrel into the front of the Knockout barrel to keep it nice and straight. A bit of tape wrapped around the piece and it should be a nice firm fit into the front. Slightly conical to account for printing tolerances.

Want an easy way to fit a dart barrel into a Rival blaster? Here you go. Made to fit 16mm OD barrels and use #13 orings, which are 7/8"ODx11/16"IDx3/32". You can use a thinner oring but a thicker one in my experience makes the print split. Just stick this onto your barrel and it's a nice snug, mostly airtight fit.

In line with my preferred way to work, this is completely uninvasive to the blaster used as well as entirely reversible. Works especially well for the Knockout where it already has a functioning breech that benefits from as little as just a barrel shoved into it.

I'll probably make a front alignment cone piece that butts up into the wider part of the Rival barrels just to help align the barrel farther out from this piece.

Category: Toys & Games