Introduction: Knex Longbow SR-L V2

Picture of Knex Longbow SR-L V2

This was meant to be a sniper rifle, but I added arms, and everyone wanted me to call it a crossbow.

Anyway, it is a sniper bow now, and its the biggest knex project I have ever built in terms of part count.

PROS (a * means its an improvement over v1)

- true trigger
- very powerful
- good range (50-70 feet)*
- very accurate
- has a sight*
- better stock*
- has a collapsible bipod
- faster load time than v1 (5 seconds for v2, compared to ten seconds for v1)*
- NEVER jams
- is much more sturdier*


- out of all my knex projects, this uses the most parts. (but im sure this isnt a problem for every other knexer out there)
- misfires when shot at a straight angle (catches on the connectors). It can shoot right when pointed downwards, so it should be used for sniping off high balconies or ledges

stock- bartboy
Bipod- KillerK

Anyway, I would use this along with My AR-4 v2 in a knex war.

If you like it, lets build it!

note- due to a new breakthrough in my pics, there is no blur anymore.

Step 1: Get Materials

- 17 white
- 16 blue
- 4 purple
- 24 yellow
- 28 green
- 27 red
- 31 orange

End Connectors
- 4 tan lock
- 2 black hinge
- 2 blue hinge

-1 black
-7 grey
-6 red
-8 yellow
-13 blue
-33 white
-lot of green

-4 blue spacer
-35 silver spacer
-1 head top

TOTAL-222 parts (not counting green rods)

wow, I have nearly no parts at all....way lower than my estimate.

Step 2: Handle and Stock.

Picture of Handle and Stock.

This is the stock and handle. stock is modified off of Bartboy's stock.

picture 1- the overview
picture 2- the stock only
Picture 3- the ratchet and trigger.

Step 3: Main Barrel

Picture of Main Barrel

This is a new 5- layer thick barrel

Picture 1- overview
Picture 2- some parts of the barrel removed
Picture 3- bipod holder
Picture 4- attach to handle
Picture 5- make this part.
Picture 6- connect it

Step 4: Bow

Picture of Bow

this is the bow. build it.

and note the rubberband placement and the attachment to barrel.

Step 5: Top Rail (optional)

Picture of Top Rail (optional)

this part is optional, but it makes the gun look better and adds a sight.

picture 1- the top rail.

Picture 2-3 the connection

Step 6: Bipod (optional)

Picture of Bipod (optional)

you know the drill:

Picture 1- build the legs (note the rubber band)
Picture 2- attach to barrel

Step 7: Ammo

Picture of Ammo

This is the modded ammo (picture 1)

It should be easy to load and fire the gun from here.

Enjoy, and dont forget to rate!


bboy321321 (author)2013-01-09

hey I saw this on Knex innovation and it lead me to a link here

DJ Radio (author)bboy3213212013-04-22

KI IS STILL UP?!?!?!?!?!?

~Meme~ (author)2012-01-27

I like it, good job man!

knexsim (author)2011-10-21

instructions out now!

knexsim (author)2011-10-21

hey i made this crossbow/gun at 2 in the morning i couldent w8 for morning anny way 4 months after i buildted it and made this other gun i had a brain wave and i added a rail mech to it to stop the ammo pining out a difernt direction so if u wont
jamesalex55 plus other peps il put up a link to my instruction vid

jamesalex55 (author)2010-12-20

I built his but it doesn't fire properly. I've tried pointing it at different angles but when the elastic band hits the ammo, it pushes it forwards and then spins it as it leaves the crossbow. It doesn't really fire and sort of spins the ammo out. Only goes about 6 feet. :( I'm not critiscing you I think I built it wrong somewhere but does anyone know how to fix?
I love the gun in terms of looks and feel though. :)

DJ Radio (author)jamesalex552010-12-23

I really don't know, it might be the alignment of some parts. I've never come across that problem with this before. Of course, I built it almost 2 years ago, I really don't remember much about it...

antoman11 (author)2010-11-08

Can you make this easier to make as i cannot make the v1 as i has like nearly no parts (and the instructions are blurry)

PiTBuLL892 (author)2009-11-02

really dont understand it but ill try and put a message up in a few mins

you build at 2 in the morning
 theres this new thing its called sleep

i actually started building at 11:30am but its because i live in england
(if you live in england also ITS WRONG)

Furloy (author)PiTBuLL8922010-07-23

everyone in england is so nice and polite your lucky

SnapFitPieces(: (author)Furloy2010-08-23

im from england

Furloy (author)SnapFitPieces(:2010-07-23

ever heard of this other new thing called time zones? btw i love england!

Furloy (author)2010-07-23

supr comfy handle= plus one star after i finish, shoot and then rate!

Furloy (author)Furloy2010-07-23

five stars!

dansdoc (author)2010-07-10

its a cross bow. can gun swivel round and bipod stay in same place or is it fixed in 1 position?

prodo123 (author)2010-03-15

This is a crossbow.

DJ Radio (author)prodo1232010-03-16

Uhm no sh*t? 

prodo123 (author)DJ Radio2010-03-16

It says it's a longbow.

wertywaster (author)prodo1232010-06-08

it is a long bow

prodo123 (author)wertywaster2010-06-09

and you're the comment chain And for DJ Radio, LOL.

wertywaster (author)prodo1232010-06-10

I mean its tiny. not long

prodo123 (author)wertywaster2010-06-10

Again, read the comment chain.

wertywaster (author)prodo1232010-06-10

i already read it... but it does not prove any thing>

prodo123 (author)wertywaster2010-06-11

again, you're stupid.

wertywaster (author)prodo1232010-06-12

yr stupid,freako

prodo123 (author)wertywaster2010-06-13

a. It's name is a longbow, it's a crossbow, genius. b. it doesn't look like you understand English. c. Considering that, you are stupid.

wertywaster (author)prodo1232010-06-16

u r stupid

prodo123 (author)wertywaster2010-06-17

you just proved yourself stupid by double posting.

wertywaster (author)prodo1232010-06-16

ha ha!

DJ Radio (author)wertywaster2010-06-08

That's what she said.

prodo123 (author)DJ Radio2010-06-09


DJ Radio (author)prodo1232010-04-02

So?  That's just my nickname for this particular crossbow.

prodo123 (author)DJ Radio2010-04-03

ok, that made more sense.
btw check my sniper v2 out, gonna be up tomorrow

wertywaster (author)2010-06-08

I dont like da looks of da gun though

DJ Radio (author)wertywaster2010-06-08

It wasn't really designed for looks.

wertywaster (author)DJ Radio2010-06-10


DJ Radio (author)wertywaster2010-06-11

Yeah, see, I have this thing of performance over appearance. I'd rather take a crappy looking gun that punched through cardboard than a near perfect replica of a real gun that shoots 10 feet.

wertywaster (author)DJ Radio2010-06-16

thats cool! ill comment and rate later> K><

MegaMetal8 (author)2010-05-02

how does this have "loads" of pieces

DJ Radio (author)MegaMetal82010-05-02

It doesn't.  Back then I had hardly any knex and this used up damn near all the parts I had.

MegaMetal8 (author)DJ Radio2010-05-03


i might build your commando

brycerogers289 (author)2010-05-02

where do you get the hinges reply soon

DJ Radio (author)brycerogers2892010-05-02

I cant really remember the set, but you can get some off of's "Parts and extras" section.

PiTBuLL892 (author)2009-11-02

i think i got it right

PiTBuLL892 (author)2009-11-01

im not sure this or the ossr...
i think the ossr takes my fancy a bit more but it uses more pieces...

DJ Radio (author)PiTBuLL8922009-11-01

OSSR is more powerful than the Longbow.  It also shoots oodammo and sniper rounds.

PiTBuLL892 (author)2009-11-01

it goes 70 feet and doesnt use that much pieces (well, iv got alot of knex)
i could make like 5 of these!

DJ Radio (author)PiTBuLL8922009-11-01

Good for you.

About This Instructable




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