2 shot burst??? > AK Discussions

Posted: 7/25/2007 3:56:29 PM EDT

I have a romy g on a NDS reciever. On the saftey selector when I put it to fire it fires one shot when I pull the trigger. No looks like the safety select lever will go slightly past the fire postion and when i pull the triiger it seems to fire a 2 shot burst. Any idea what this could be???

Posted: 7/25/2007 4:46:19 PM EDT

[#1]

Probably not safety related.
In the semi-auto AK the safety is not a "selector" it's just a safety.
It's either ON and blocking the trigger from moving, or it's OFF and not blocking the trigger.
It should have nothing to do with doubling unless somethings defective.

First thing to check is to insure every thing is installed correctly, (hammer springs on top of the trigger, etc).

Next, check the disconnecter to insure it's operating properly, and is adequately catching the hammer.
If the disconnecter isn't adjusted properly, the rifle can double when the hammer fails to be caught and held by the disconnecter.
What happens is, the disconnecter fails to hold the hammer, and the hammer is following the bolt back down with enough force to fire the round.

Last, are you shooting it off the bench?
If so, you may be inadvertently "bump firing" the rifle.

In any case, get this diagnosed and FIXED. DO NOT continue to fire the rifle until you do. This can be dangerous and the rifle can fire in an out-of-battery, unlocked condition. BAD NEWS for both the rifle and your face and eyes.

Posted: 7/25/2007 5:07:40 PM EDT

[#2]

A big plus one for what the poster said above. Your "selector" lever does nothing to the fire control group on a semi AK except to block the hammer from falling.

Posted: 7/25/2007 5:22:08 PM EDT

[#3]

Quoted:
Probably not safety related.
In the semi-auto AK the safety is not a "selector" it's just a safety.
It's either ON and blocking the trigger from moving, or it's OFF and not blocking the trigger.
It should have nothing to do with doubling unless somethings defective.

First thing to check is to insure every thing is installed correctly, (hammer springs on top of the trigger, etc).

Next, check the disconnecter to insure it's operating properly, and is adequately catching the hammer.
If the disconnecter isn't adjusted properly, the rifle can double when the hammer fails to be caught and held by the disconnecter.
What happens is, the disconnecter fails to hold the hammer, and the hammer is following the bolt back down with enough force to fire the round.

Last, are you shooting it off the bench?
If so, you may be inadvertently "bump firing" the rifle.

In any case, get this diagnosed and FIXED. DO NOT continue to fire the rifle until you do. This can be dangerous and the rifle can fire in an out-of-battery, unlocked condition. BAD NEWS for both the rifle and your face and eyes.

Also, if your at the local range and the wrong people see it...Your prolly gonna end up in F.R.M.I.T.A.P.

Posted: 7/25/2007 5:48:52 PM EDT

[#4]

How do you avoid inadvertently bump firing from the bench?

Posted: 7/25/2007 6:47:40 PM EDT

[#5]

Quoted:
How do you avoid inadvertently bump firing from the bench?

Dont lean your elbows on the bench, or take your finger off the trigger ASAP after the first shot.

Posted: 7/26/2007 12:14:46 PM EDT

[#6]

Quoted:
How do you avoid inadvertently bump firing from the bench?

Number one way, and a huge lesson in improving your shot....Hold the rifle firmly, in your shoulder and your shooting hand. Dont fight it, But you dont want someone to be able to take it away from you. Number 2 lesson, Trigger all the way to the rear "Its called follow through"

Posted: 7/26/2007 12:36:10 PM EDT

[#7]

What kind of fire control group is in the rifle? Which NDS receiver?

From NoDakSpud.com
We don't recommend the use of the Tapco G2 "single hook" trigger in the NDS-3 and NDS-65.

Quoted:
G2 Fire Control Group Installation: why is this happening?

Please check your rifle for the following and do not use “live ammunition” until your firearm is functioning properly all of the time. Cycle the rifle without ammunition and check for all engagements.

Make sure that the Disconnector engages the Hammer when the Trigger is held back. Release the Trigger and make sure that it catches and engages the Hammer. Move the Safety up to the safe position and make sure that it properly engages the Trigger and will not allow the release of the Hammer when pulled (there should be virtually no movement of the trigger with the safety on). Now release the Safety and a gentle pull of the Trigger should release the Hammer. Do these steps several times to verify that all parts are installed and working properly.

“Why is this happening?”

Hammer not engaging
Disconnector not engaging
Appearance of “double firing”
Safety not working
Trigger will not go forward without manual assistance

What we have found are some simple things to overlook during installation that have caused these symptoms. These are things that are easy to do and will cause the above experience.

Hammer installed backwards (the hammer will go in backwards on most rifles; proper installation is required)

Hammer Spring legs are not resting properly on the back legs of the Trigger (make sure that each leg of the hammer spring, left & right, is hooked over the appropriate leg of the trigger)

Disconnector Spring damaged or missing (some surplus rifles have springs that are worn or bent; replacement required)

“No Fumble” trigger Sleeve not installed (this is the tube that comes with the G2 parts and assists you during assembly and gives proper spacing of the disconnector and trigger; installation is required. This part goes into the trigger hole and through the disconnector hole. This acts as a subassembly and contains all parts so that you can install the trigger pin after all parts are in the receiver.

Trying to install a “double hook trigger” in a receiver designed for “single hook”; look at your receiver where the trigger drops in, if there is only one slot on the left hand side at the front of the square opening, you should be using a single hook model.

Trigger Pin not seated completely. The hammer and trigger Pins must be seated completely and a retainer must be properly engaged with the groove of the pin.

“Single Hook” Trigger drags or hangs up on the front of the receiver opening. Lately, AK receivers have had a wide variety of tolerances on the trigger opening. Some manufacturers now have a larger opening, some have a radius in the front right corner, others have square cut out. Late model G2 Single Hook Triggers have been designed to accommodate all variances above. This was accomplished by removing material on the front right corner so that it would properly clear the varying openings of the receiver.

Sounds like what happens when the forward edge or back edge of the trigger contacts the receiver in the trigger cutout.

Posted: 7/26/2007 2:36:22 PM EDT

[#8]

Read this thread. Gunplumber has a modification to stop doubling.

Strange, I have never inadvertently "bumped" my AK, standing or benched, but my buddy did while shooting in the standing position. I modified the group per GP and the rifle is now buddy proof

mfn

Posted: 7/26/2007 2:57:08 PM EDT

[#9]

Quoted:
Read this thread. Gunplumber has a modification to stop doubling.

mfn

I read it but something I wonder about. He grinds the fire control groups down some removing metal to a certain depth. What does that do to the heat treatment of the metal in the fire control group? Some years ago FSE had improperly heat treated fire control groups which would deform. When polishing a fire control group you aren't supposed to remove metal with an abrasive as it will affect the heat treating. How does this modification affect the fire control groups strength? (in the area he made the lip on the hammer)

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