I'm not going to review the basics of SNAP building. If this is your first time building a SNAP, I'd suggest you consult one of rork's excellent writeups instead.
Here is the end product, which is essentially an optimized, ergonomic SNAP with a wire plunger mechanism:
It's constructed very similarly to rork's MK. V, but has some important differences and improvements.
In the main body:
The body is 2" longer than a normal snap allowing more room for the 1"-1/2" reducing bushing (instead of the 3/4" endcap) and the 3/4" CPVC coupler which holds on to the spring. It also allows more room for attachment points on your wooden handle. Overall, you get a better weighted, more comfortable blaster.
The trigger is also moved up to work with the new length and internals, and you'll also notice that a piece of basswood replaces the angle bracket on the trigger - way more comfortable, still very durable.
Here, you can see the screws that go directly from the wooden handle into the body of the blaster:
And another minor improvement, small rubber washers that effectively seal the front bushing:
Here is the main divergence from a typical snap, the wire priming mechanism:
The picture should be fairly easy to follow but lemme know if there's any confusion to the construction.
Instead of using a single length of wire that ends in a priming handle, my design attaches both ends of the wire to the plunger head, forming a loop which protrudes from the rear of the blaster. This loop is covered with a soft tube (i used 1/4" vinyl tubing) and then forms a very comfortable priming handle which does not whip around when firing. By keeping the length considerably longer than the priming stroke, there's virtually no danger of decapitated fingers. It's also much much lighter than a traditional plunger rod.
Here's a closer look at both ends of the priming mech:
Here it is with an RSCB (clear dart tube, brass breech, 12in CPVC barrel):
Here's the gun primed:
Aside from the annoying habit of ejecting barrels (WIP), It also rocks cardboard's world:
(single BB darts, slingshot weights are way worse)
It's getting a mad paintjob soon, so check back soon. Hope you like it!
Edited by Fome, 14 July 2010 - 07:12 PM.