Introduction: FX-9 Crossbow

Picture of FX-9 Crossbow

Here it is, my newest project, FX-9 Crossbow. This is the second project in the FX-9 series.

Here are the facts:
Extremely sturdy ( dropped it from 5 feet and it survived)
Amazing range for k'nex ( 100 - 130 feet )
Uses a trigger like the reaper but it also uses a track
it weighs about 5 pounds
shoots a small but accurate bullet but you can shoot a number of different kinds

Tell me what you think


LvNo1000 (author)2013-08-11

That thing is so thick that a real crossbow might be cheaper than the K'nex cost of that O.O

owen5702 (author)2013-08-04

Mine craft pick

knexinventer (author)2012-11-25

minecraft pickax

No kidding!

Gold pickaxe that is

innovationista99 (author)2011-11-13

my crossbow was bigger (6 foot 4 inches)

rlaxrlax (author)2011-08-23

please post pise count

nathan733 (author)2011-06-21

looks like a T!! cool though!!! 5/5

The Jamalam (author)2009-11-03

Holy jesus. You could kill someone with that thing. You wouldn't have to fire it. Just wield it at look at them :/

You sound like knexguy now.

point blank to the neck, sharpend rods

Is that good or bad? And why??

That's not good or bad just saying it sounds like what he said. lol

NYPA (author)2009-09-16

The ultimate K'NEX war ( using iconic knexers) TheDunkis: Ha! i have you with my UMP-45! DJ Radio: My OSSR has got YOU my friend! KILLERK: Ha! i have you both with my SR-V2! TheDunkis and DJ Radio: CRAP! Killer~SafeCracker: Uh, guys? Every knexer out there in the war: OH CRAP!

DJ Radio (author)NYPA2009-11-04

Range isn't a number 1 priority in a war.  ROF and accuracy are.  Then Reload times, THEN range.

Furloy (author)DJ Radio2010-07-22

a weapon that has good range will shoot hard and accurate from a strait range

True, so true. But it is a bonus.

Killer~SafeCracker (author)NYPA2009-09-17

Whats with the: Uh, guys??

NYPA (author)Killer~SafeCracker2009-09-17

You get there attention. and they see you with the "anchor".

Killer~SafeCracker (author)NYPA2009-11-12


disturbedrules2 (author)2010-01-16

COOL!!! how many yellow connectors does it use? i probably dont have as many connectors as there are yellows on that gun!

IoIzor (author)2010-01-09

HOLY CRAP! This thing looks amazing!!! Please post it... and be sure to include a part count! Awesome gun! 5*

gtrain (author)2009-12-11

that is beast! i probably wont be able to build half the crossbow. how many pieces it use?

Lowney (author)2009-12-01

Was there really any need to make it so...

Wafflicious (author)2009-10-18

You could chop down a tree with this thing!


Lol, I'm a big fan of your guns even if I can't build them.

Well thanks man. MY next TNKIT entry isn't a gun but probably the most innovative thing I've made.

The Great Knex Warrior (author)2009-09-15

where's your house? ...oh, behind the crossbow!

knexguy (author)2009-03-27

You could kill someone with that thing... Without firing it.

I_am_Canadian (author)knexguy2009-03-27

Heart attack?

knexguy (author)I_am_Canadian2009-03-28

Possibly, I was thinking more melée style though.

I_am_Canadian (author)knexguy2009-03-28

Yeah, thats what I was thinking too.

Or dropping it off a high building on someones head...

Sandy44444 (author)I_am_Canadian2009-09-05

yuo tont need a hi bilding gust guts

I_am_Canadian (author)Sandy444442009-09-08

That'll go down as one of my all time favorite comments.

Ya a heart attack is what my dad had when he saw it.

Blackbird17 (author)knexguy2009-08-22

hit them on the head with it....owch

DJ Radio (author)knexguy2009-05-29


RMConstruction (author)knexguy2009-04-10

LOL X 100,000,000!!!!!!!

knexguy (author)RMConstruction2009-04-11


KnexFreek (author)2009-09-07

wheres the trigger????????????

KnexFreek (author)2009-09-07

r u sure i only weighs 5???? dude it must weigh 10!!! at the least!! also how many knex did u use on this (Just an estimate)

Sandy44444 (author)2009-09-05

how much dose it weigh

About 5 pounds.

anddre111 (author)2009-07-14

Dude i just droped a load in my pants!!! P()$T!!!!!

Sandy44444 (author)anddre1112009-09-05

you rot this when i was at a green day concert

I posted V2.

spotty mcgee (author)2009-08-11

is it an anchor or a crossbow?

Sandy44444 (author)spotty mcgee2009-09-05


Ha Ha good one.

About This Instructable




Bio: Im Killer~SafeCracker, I started using Instructables in 2009. I mainly post in the Knex world, but I venture out sometimes. Check out all my ... More »
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