this is my sniper rifle I have made that combines the power of this guys firing pin and trigger system with the more accurate barrels of regular guns.
It was originally going to be modeled after the H&K mp5 but when i couldn't get a bottom feed magazine to work, I turned it into a sniper.

Step 1: Bulding the Stock and Handle

I decided to make this gun as sturdy as possible for the parts i had, some of the extras aren't needed but help in the performance of the gun.

First you will need to build the stock
1. build 3 of these
2. attach together like so (not pictured: attach three gray rods
to the white connectors so they are opposite the red connectors,
attach a dark gray connector to the middle rod)
3. build this, and attach the side with three green connectors
to the slot above the gray rods.
4. finished stock.
5. build 2 of these, and attach together with a white rod
and a dark gray connector as a spacer. ( i would take more pictures but all
I have is a camera phone and it's starting to get costly sending the pics to my email
6. attach handle to stock
7. finished stock/handle

Step 2: Trigger System

next up is the trigger made by ricky0207, to save on cost of text pics, im going to use a couple of his images, ricky, if you don't like me using your images then leave a comment and ill take them off.

1.this is the top of the trigger, and the piece that
holds the firing pin till you pull the trigger
2.build this but you add a few pieces to it (see picture)
3. attach to handle

now take the top trigger and attach it with rubber bands to the bottom, see ricky's instructable for more details on this part.

Step 3: Front Handle

you may be able to use rickys original design for a handle, but I didn't like the feel of his handel so i built this sturdier one.

1. build 2 of these
2.build 1 of these
3/4. attach together like so
5.attach to rest of gun, (theres really not to much left now)
6. make these
7. attach to end of handle like this.

Step 4: Barrel/bipod

i designed the barrel to also be a bipod, at this point i was running out of parts so i just used two red bars as the bipod,I'm sure if someone wants to they could build a better one for this setup. but it serves it's purpose.

1attach as many red connectors as will fit on a gray rod,
using the middle slot of the connector, then attach 2
red rods on one of the ends of the barrel.
2. attach to gun.
3. build firing pin

Step 5: Firing

here are some pictures of the gun after being fired and cocked back.

to fire simple pull back the firing pin till it locks into place, add projectile to front, and pull trigger.
my first instructable is officially in just 1 hour.