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semi automatic knex pistol

this is it! the first ever true trigger semi automatic bottom loading magazine pistol.i was playing around with different mechanisims of how to make a semi auto like having the trigger pull back the ram but this did not work so i moved on to a multiple rubberband system and how a rbg could be adapted and this is what i found...

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296 comments

1-40 of 296

Jul 18, 2011. 9:49 AMcrazykiddo says:

great design but u did forget to add up all the pices

Jan 8, 2011. 7:32 PMinergy says:

This gun, is.. Ok... much better guns on instructables

Jul 9, 2011. 3:21 AMThe Jamalam says:

It was way ahead of its time when it was posted. 4 years ago.

Dec 16, 2010. 12:44 PMthedraganime says:

cool looks like a skorpion at the angle from the last picture im gonna try it out

Jul 21, 2010. 5:46 AMthatguy95 says:

ever noticed how all the good guns seem to not have the pictures just to annoy us?

Aug 27, 2010. 8:26 PM14r31337 says:

Copy and paste the picture into some picture editting program to see it.

Aug 17, 2010. 8:55 AMSpycrab says:

I built it, it was kind of inaccurate, slow reload, but the handle (when changed around a tiny bit) was SO FREAKING COMFY :D I'm going to have to change it around to just be an rbg and use it for the kick-butt handle. Overall...4* :)

Jun 16, 2010. 12:36 AMiloveemogirls says:

awesome gun i love it 5 stars

Dec 19, 2009. 2:23 PMwill333333344 says:

it takes way to long to reload you need to make that better

Dec 20, 2009. 8:04 AMbedbugg2 (author) says:

I have retired from making K'nex guns now...I'll leave that for someone else to do :P.

Aug 4, 2008. 12:15 PMj-chode! says:

I modded this a bit, so its like a table-top cannon. When you press down on the top, it fires and then it springs back up again. Semi auto of course. If I post it, I'll give you 77% credit.

Aug 6, 2008. 8:26 AMbedbugg2 (author) says:

ok, post away!

Aug 8, 2008. 1:14 PMj-chode! says:

It is up, but only as a slideshow as my brother dis-mantled it.

Feb 19, 2009. 6:41 AMThe Jamalam says:

why did he take it apart?

Oct 8, 2009. 8:25 PM

DJ Radio says:

He was probably a jerk.

Feb 7, 2008. 5:41 PMPieMaster777 says:

WTF if u post a knex gun people expect it to shoot knexs

Aug 24, 2009. 12:34 PMPieMaster777 says:

srry thought it was rbg cant see why though...used to be a noob...

Feb 8, 2008. 8:56 AMbedbugg2 (author) says:

what? lol...

Feb 11, 2008. 8:18 AMdsman195276 says:

he probely is a NOOB that did not look through the instructable and just thought it was a RBG.

Jul 11, 2009. 4:43 AMaikduck says:

i've experimented with having a full auto knex using the rbg style mechanism but the rubber bands all shoot before the bullets can be reloaded by the magazine. How do i slow the mechanism down that releases the rubberbands?

Jul 12, 2009. 2:13 AMbedbugg2 (author) says:

Yeah, i came into the same problem when i tried to make mine fully automatic...the only solution i could think of would to be to use some kind of geared mechanism to slow down the rubber bands.

Feb 23, 2009. 4:06 AMMiles Tails Prower says:

I made something similar...

BUT!!!! before you say it is better, this one is made first so it is better. Very good work. 4.5 stars!!!

Jul 12, 2009. 2:12 AMbedbugg2 (author) says:

Wow! that really is something...much better than my design, you should post it.

Apr 6, 2009. 6:18 PMthe_builder says:

You have to post that gun. It is amazing!

Apr 7, 2009. 7:21 AMMiles Tails Prower says:

Thank you!!! But I'm VERY lazy, I mostly don't post instructions...

Apr 8, 2009. 8:11 AMthe_builder says:

Wait, I did notice that you do post videos of instructions, so would you be willing to do that? I you just do want to, thats fine. It doesn't make a difference to me!

Apr 8, 2009. 9:06 AMMiles Tails Prower says:

Yup, I'll try my best for you.

Apr 7, 2009. 8:14 PMthe_builder says:

Awwwwwww... Darn! =)

Apr 6, 2009. 6:30 AMtherandomperson says:

actually, ive done my take-on of your gun. ill post pics soon

Jun 7, 2008. 4:59 AMyerjoking says:

i gots a problem, after a couple of shots a bullet falls out, am i using too powerful elasticbands?

Jan 17, 2009. 7:58 AMWafflicious says:

Most likely too powerful on the mag.

Jan 9, 2009. 1:20 PMGIVECASH says:

Thanks bedbugg2, the gun shoots well

Jan 8, 2009. 2:03 PMGIVECASH says:

I have the gun built, but I don't understand where to put the green bullets.

Jan 9, 2009. 8:27 AMbedbugg2 (author) says:

you put them in the magazine, picture 3 on the last step, the part wite lots of white snowflakes. you take the rod out which is held in by the elastic band, drop them in one by one, once you have loaded all 8 you put the rod back in to press them against the sight. just message me agian if you have any more problems :)

Jan 3, 2009. 5:38 AMknexsuperbuilderfreak says:

can i use the trigger system for my gun? (cridet to you)

Jan 3, 2009. 11:58 AMbedbugg2 (author) says:

sure, post a link when you're done.

Jan 7, 2009. 4:23 PMstale56 says:

how bout me? i have an excelent mech (in my opinion) and i was looking for something so it can shoot rods to (i was to lazy to look at the dunkis's mech and follow it). if u wanna see i have a link to the forums here so can i please base my rod shooting mech off of urs? i will give u credit in any way u want me to. i feel like a complete idiot begging u for this...

Jan 3, 2009. 12:31 PMknexsuperbuilderfreak says:

ok thanks

Jul 31, 2008. 9:43 AMIkedog1995 says:

should i post? pros: Powerful (40 to 50 feet), cool looking scope, doesnt mis-fire, simple knex gun cons: looks bad and slow reload ( but not too slow)