Simple Knex Fire Pin and Hopper

About: i m the best


easy to build and holds lots of rods easy to cock and strong

Step 1: Barrel

put 6 tan pieces on each gray rod

make sure a yellow rod can fit in the barrel

18 tan pieces
3 white connectors
1 orange connectors
3 gray rods
1 white rod

Step 2: Barrel and Hopper Construction

add all these orange connectors

12 orange connectors

Step 3: Hopper

the hopper is fairly large

2 white connectors
2 red rods
2 yellow connectors
2 yeloow rods
2 green rods

Step 4: Strenghining Arms and Fire Pin

3 black(gray) rods
3 orange connectors

Step 5: Finishing

ur done



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    15 Discussions


    9 years ago on Introduction

    hey i just finished it and all but how do you fire it? is there a rubber band mechanism? can you please help me?


    Reply 10 years ago on Introduction

    it is do be used in your own design because it is fairly powerful and it doesn't jam so just build the gun around it if you want me to post a picture of a gun using it I can