The D3 Lego Semi-Automatic Handgun

This is the second semi-automatic gun I have built, and because this gun is larger than a pistol, but smaller than a rifle, I have called it a 'handgun'. The gun has a 30+ foot (depending on rbs used), and has good power and accuracy. It has a 6-round magazine, but the capacity for rubberbands in the gun is more than that. The full reload time (putting rbs on trigger, adding on the top, putting on and locking the magazine, putting rounds in the mag, and putting the mag rod and rbs in the magazine) takes about 1 minute and 40 seconds (my record), which, for semi-automatics is very quick (some can take as long as 5-7 minutes). The D3 has many new features which were not included in the D2, such as:

-It fires a (2x3)F round, which is larger than the (2x2)F round fired in the D2 (meaning it has more stopping power)
-It is a smaller gun than the D2, in height and length
-More comfortable handle
-More durable gun design (meaning more rubberbands than 6 can be added in the gun)
-It features a leaf firing sight (like the M16's sight), as well as a tactical rails
-The magazine is easier to put into the gun and remove
-The magazine can lock inside the gun, using a lever
-The gun looks better than the D2 (I think it kind off looks like the Thompson Submachine Gun, but thats just me)
-Improved reliability when firing (no jamming-where the round gets stuck in the gun- and greatly reduced chance of double-fire- when 2 rounds or fired off at almost the same time)
-Simpler design, meaning it is easier to build
-Shorter reload time than the D2
-The firing system has also been simplified, with only 2 gears on the side, opposed to 4 (in the D2)

WEBSITE: http://sites.google.com/site/bblegobrickworks/Home

WHEN YOU ARE DONE THIS INSTRUCTABLE, GO TO https://www.instructables.com/id/The-D31-Semi-Automatic-Handgun-Mod/ AND ADD ON THE IMPROVEMENTS!



Soon I will start work on the D3.1 . In this mod, I will fix some issues with the top of the gun, the area around the magazine, the magazine lock will be improved, some kind of safety will be added to prevent you from accidentally pulling the trigger, and a larger round capacity will be added to the gun (maybe 7 or 8 round capacity)

This is the hand hold on the back of the gun.

For magazine lock mechanism, you will need a very small piece of tape (as in the smallest that you can possibly tear off- maybe like 5mm in length, and whatever the width of your tape is)

This magazine holds 6 (2x3) bricks (each of which have a flat piece on top).

This step begins to add a top onto the handle.

Fairly easy step.

This just creates a base for the gears to go.

This creates the firing gears and creates part which stops the 'L' shaped piece from going too far back.

This finishes the firing mechanism.

Short, easy step.

This is the area will hold the magazine in place inside the gun.

This finishes the bottom magazine, attaches the piece made from step 10+11 to the main body, and attaches the piece made from step 2 to the main body.

This fills in the middle of the gun, finishes the firing runway, and builds up the sides of the gun.

The top of the gun only goes up to where the magazine is, and after that there is space so that the round can easily leave the gun. The sight up of: the tactical rails, the flip up 'bunny ears' rear sight, and the forward sight. (This sight is supposed to work like the M16 sight.)

The rubberbands attached to the trigger to keep it from firing.

Put the magazine in so that the notches are on the sides. The ammo is 6 (2x3) pieces, each with pieces on the top.

The D3 needs 6 firing rubberbands. NOTE: Before loading the rubberbands or ammo, you need to put a lubricant (vaseline) on the firing runway, the sides of the magazine (on the inside of it) , each ammo piece all around it, and on the magazine rod (on the part which will make contact with the ammo and inside of the magazine)

Very simple. Put the 6 rounds into the magazine (in the hole in it), then, put the magazine rod on top of all of those, and attach the rubberbands on the magazine to it.