Credit to Gorkem for the butt shape, Jager for the trigger and the end of the barrel, and the inventor of the OSNJCKMA2 for the adapted magazine of his that I extensively adapted for my gun.
XKR stands for two things - Xtra-good Knex Rifle, or eX Kevin Rudd, our new jerk of a Prime Minister.
I am not going to state a range, because it is impossible to measure a range, because people have different elastics, and build it differently. What I will say it that it is quite powerful, and with one elastic on each side of the ram it fired as far the Gorkem's sniper I built. Maybe I did a crap job with Gorkem's, or maybe this is really good. I dunno.
Parts List (all counts are approximate, but they are pretty accurate)
9 Grey rods
1 black rod (or grey if you don't have)
6 purple/green bendy rods (just decorations)
6 red rods
1 tan rod (or red, if you don't have)
13 Yellow rods
39 Blue rods (or so - they're hard to count)
Lots and Lots of white and green rods
Lots of light and dark grey connectors, most of them are intercahngeable
30 reds (plus six on front handle, or something else)
42 yellow connectors
49 full circle connectors - all but 4 can be swapped for 7 slot ones.
36 straight connectors
42 green connectors
P.S whenever I say "magazine", what I mean is hopper, but my ego gets that much bigger when I say that I build a magazine, rather than I built a hopper.