Aug Semi only safe bar modification.

[Iceni]

As requested by @FreeFrag.UK And because I know @Druid799 is probably interested as well here's a guide on a small modification to give a 3rd position to the AUG AEG safe bar. To allow single shot only in a new bar position. Note that some guns are shipped with this mod already done. And you can buy safe bars that are modified as well.

 

Turns out I'd already written this in another older thread, so I'll just make it relevant, and add some updates.


This is to give an aug a Semi only mode, without removing full auto.


First, you want to remove the safe bar. It just pushes out to either side.

Once out there is a small metal clip that you need to keep safe.

Look on the back side of the bar, It should have a red dot on it. There should also be 2 grooves cut into this side of the bar. You need to cut the third groove between those existing slots. I find a small triangular file works best for this. You want to try to match the existing grooves for depth and width as well as keeping the cut straight.




Once the cut is done you put the bar back into the gun (red dot to the shooter). Make sure you get the metal clip in position first before you put the bar in. And once it's back together you should find the safety now has 3 click positions.

Split the upper from the lower if you haven't already done so.

Now you need to measure the travel on the trigger to the semi position.

Grab a marking tool. Pen scalpel it doesn't matter. Set the bar to the safe position and pull the trigger so it stops. Mark this position on the side of the trigger slide. (1)

Pull the trigger until it reaches the detent where the semi-auto shot finishes mark it off (2).

Pull the trigger all the way into the full auto position until it stops mark the position(3).


Measure between 1 and 2. Transfer that to the safe bar using the front of it as the 1 position. Measurement (B)




You now need to take a sideways measurement. Put the safe bar back into the gun with the sprung bar.

Put the safe bar in the auto position.

Pull the trigger all the way in. And push the safe bar over towards the safe setting till it stops moving. Use the side of the gun and mark this position on the safe bar.

Release the trigger, and push the safe bar to the new middle position. Mark the safe bar on the same side.

The distance between these marks is the amount of material you need to remove from the bar (A).




Mark the cube that needs cutting and remove it down to the lower level of the bar.

The cube of material that remains will act as a stop for the trigger, so do not accidentally cut it off! Working slowly with a scalpel is better than trying to go at it with a big knife, saw or dremel .




This should give you a semi only position on an Aug, You may have to refine the cuts, but removing less and working up to the correct measurement is better than removing more.

[Druid799]

We’re not worthy ! We’re not worthy ! 

Cheers bud you truly are a star ⭐️ 

 

[Iceni]

Just make sure when you mark number 1 you do it to the instructions.

The mark is made when the bar is in the safe position and the trigger is pulled. That first mark acts as the reference for how deep the trigger is pulled. If you do it wrong you might end up overshooting the mark and gaining nothing.