Introduction: Knex Pistol With Sear System
this is a pretty powerful (20 feet with one #64 rubberband)knex pistol i made using the trigger and sear system in a similar way shown in my previous instructable. The red connectors on the back of the gun aren't in the pic but theyre in the instructions.
Pieces:
Rods:
2 red
1 tan (rigid)
8 blue
15 white
26 green
Connectors:
4 white
2 blue
20 yellow
4 green
14 red
2 light grey
2 orange
11 dark grey clips
2 tan clips
2 special black arm things
3 #64 rubberbands (preferred)
Step 1: Body
make 2 of these
Step 2: Trigger System
From left to right:
Trigger, Sear, and safety
Step 3: Handle
enter longer description for this step
Step 4: Trigger Reseter
this is a simple piece that will insure the trigger goes back to its resting position with the addition of a rubberband (later in the instructable)
Step 5: Barrel
sorry it's so bright pretty simple there's only two blue washers, one on either side, and there's six dark grey connectors 3 on either side.
Step 6: Firing Pin
easy
Step 7: Putting It All Together and Rubberband Attachment
READ THIS BEFORE YOU START!!!!!!!!!
For pic 2 and 3 you'll need to attach these pieces (pic 1)where shown dont attach the second dark grey connector yet (it's not letting me put image notes)
In pic 2 the safety is inserted into the (top) half of the gun in the white connector (to the left)in pic 4 put both sides together don't let anything fall out (this may be hard)
Pic 4 shows the rubberband that resets the trigger start from where shown and put the band on the red connectors in the front (you may need to to take the blue rods off by the trigger)
Pic 5,6,7 should be easy and show you where the rubberband for the sear is placed
Pics 8 and 9 show how the barrel is attached with the firing pin in the barrel as well
Finnally step 10 the rubberband on the firing pin (easy)
Step 8: Loading and Firing
to load the gun all you have to do is stick a rod down the front of the barrel (white or green works best) but anything you can fit will do. After you've loaded the gun pull the firing pin back, the bottom of the tan clip on the firingpin will catch the sear and lock in, now all you have to do is pull the trigger(may require a little force depending on the strngth of the firing pin rubberband)and watch it fly.
144 Comments
11 years ago on Introduction
20FT powerful?
Mine uses less pieces and goes 70ftpls.
Reply 11 years ago on Introduction
for just one band 20ft is okay
everyone here would love to see it post an instructable for it
Reply 11 years ago on Introduction
Here:
https://www.instructables.com/id/Knex-Slingshot-Pistol/
12 years ago on Step 5
step 5 is way too hard!!!
Reply 12 years ago on Introduction
it takes force
12 years ago on Introduction
whats a sear system
12 years ago on Introduction
cool doos it fire knex rods?
12 years ago on Introduction
ok this gun is really cool looking
13 years ago on Introduction
Should i make instructions?
https://www.instructables.com/id/Simple-And-Effective-Knex-Gun/
13 years ago on Step 5
i am makiong two at a time. please help me
13 years ago on Step 5
yah it kind of annoys me that its this hard. i took two of the handle, and now im still having trouble.
13 years ago on Step 7
killed a rat with this!!!!
13 years ago on Step 8
Awesome gun. Added a couple of parts to make it look aesthetic(because I'm a perfectionist)!
13 years ago on Step 8
=)
13 years ago on Step 8
This gun is awesome thx dude
16 years ago on Step 5
step 5 broke my fingers lol
Reply 14 years ago on Step 5
build the killerk pistol with black rods for the body lines, then you will be ready. also, i think it looks better with red connectors for this instead of yellow.
Reply 14 years ago on Step 5
I couldnt do it, i had to get my dad to force it in, even he had trouble! This thing is wicked. THE CAKE IS A LIE
Reply 14 years ago on Introduction
but the square lives on!
14 years ago on Step 8
Quite an interesting weapon. I finished it well. Great design, Fires a decent enough distance.