Ar15 2 round bursts
Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > AR-15 Discussion > Ar15 2 round bursts

Reply
 
LinkBack Thread Tools Display Modes
Old 02-25-2013, 02:31 PM   #1
Feedback Score: 0 reviews
 
revrentzero's Avatar
 
Join Date: Dec 2012
Posts: 49
Liked 2 Times on 2 Posts

Default

I recently got my stag arms LPK and I installed the trigger group in my lower. When I was at the range over the weekend I loaded a 2 round clip just incase anything was the way it shouldn't buy everything was fine. After about 60-70 rounds I put a new pair of shooting gloves on and when I pulled the trigger it shot a 2 round burst that scared me. I immediately cleared the rifle and pulled the lower and found that the pin that holds that hammer had slid out of one side of the lower and the hammer was sitting crooked. I fixed that and put my cmmg conversion in (.22) and without the gloves on it did the burst again so I had to leave so I didnt raise any suspicion.

__________________
revrentzero is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 02-25-2013, 02:43 PM   #2
Feedback Score: 0 reviews
 
AgentTikki's Avatar
 
Join Date: Oct 2010
Location: City of Lost Angels, Kommifornia
Posts: 3,444
Liked 335 Times on 264 Posts
Likes Given: 51

Default

How old is your lower?

I understand tat your trigger assembly FCG is new. But the holes for your hammer and trigger pin may be out of spec.

Id consider gettin some kns pins.

__________________
Assumption is the mother of all ****ups.
Know what you know, Know what you don't know. -Paul Pedzolt
"Jack of all trades, master of none, though oftentimes better than master of one" -Mynshul
AgentTikki is offline  
 
Reply With Quote
Old 02-25-2013, 02:45 PM   #3
Moderator
FTF_MODERATOR.png
Feedback Score: 1 reviews
 
robocop10mm's Avatar
 
Join Date: Jul 2007
Location: Austin,Texas, by God!!
Posts: 10,009
Liked 2694 Times on 1408 Posts
Likes Given: 216

Default

Usually caused by the hammer tripping when the trigger is released. Once shot when you pull the trigger and one shot when you release it.

__________________

In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball

robocop10mm is online now  
 
Reply With Quote
Old 02-25-2013, 10:12 PM   #4
Feedback Score: 0 reviews
 
revrentzero's Avatar
 
Join Date: Dec 2012
Posts: 49
Liked 2 Times on 2 Posts

Default

My lower is brand new (new frontier), should I take it to a gun smith and have him check it out?

__________________
revrentzero is offline  
 
Reply With Quote
Old 02-25-2013, 10:25 PM   #5
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
EW1066's Avatar
 
Join Date: May 2010
Posts: 303
Liked 79 Times on 46 Posts
Likes Given: 14

Default

You should call New Frontier. Tell them whats happening and give them a chance to make it right. Because whats happening isn't right. Is this a POLY lower? If it is they, will probably tell you to put the poly lpk back in it and see if it still happens. If the problem does not repeat, they will tell you it's the fault of the stag of the lpk. If it does, there is a possibility they will still blame the stag lpk or your installation there of. If their Customer service is what it should be they will make it right without question. If not you are now fore warned of possible scenarios they may pursue.

EDUB

__________________

When injustice becomes law, rebellion becomes duty.

Thomas Jefferson

EW1066 is offline  
 
Reply With Quote
Old 02-26-2013, 02:10 AM   #6
Feedback Score: 0 reviews
 
SSGN_Doc's Avatar
 
Join Date: May 2012
Posts: 4,266
Liked 2114 Times on 1246 Posts
Likes Given: 459

Default

A few variables to consider. Did you put all the Stag trigger parts? The legs of the FCG springs should engage grooves in the pins to keep them from walking. If the holes in the lower are not positioned properly then ther could be inadequate tension, or if the springs are not properly installed it could cause problems with the pins walking.

Then the disconnector that fits in the tail of the trigger has a spring under it. Sometimes folks install the tapered spring upside down so that the narrow part goes in the recess in the trigger tail. This will prevent the disconnector from bring able to seat properly in the groove in the tail under operation. This can cause doubling if shots because it may engage sometimes, but maybe not all the time.

So double check all of those springs for proper orientation. See if someone you know has a proper functioning AR that you can compare things to. See if the hole drilling was done in the proper spacing on your lower. Also do let New Frontier know if your problems if simple troubleshooting doesn't fix your problem. Check for small cracks around the pin holes as well.

__________________
SSGN_Doc is offline  
JonM Likes This 
Reply With Quote
Old 02-26-2013, 02:12 AM   #7
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Squawk's Avatar
 
Join Date: Nov 2012
Posts: 865
Liked 191 Times on 128 Posts

Default

Quote:
Originally Posted by revrentzero
I recently got my stag arms LPK and I installed the trigger group in my lower. When I was at the range over the weekend I loaded a 2 round clip just incase anything was the way it shouldn't buy everything was fine. After about 60-70 rounds I put a new pair of shooting gloves on and when I pulled the trigger it shot a 2 round burst that scared me. I immediately cleared the rifle and pulled the lower and found that the pin that holds that hammer had slid out of one side of the lower and the hammer was sitting crooked. I fixed that and put my cmmg conversion in (.22) and without the gloves on it did the burst again so I had to leave so I didnt raise any suspicion.
Why would you leave? What suspicion?
__________________

If guns kill people, mine are defective.

Squawk is offline  
 
Reply With Quote
Old 02-26-2013, 02:18 AM   #8
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
JonM's Avatar
 
Join Date: Nov 2009
Location: Rochester WI,Rochester WI
Posts: 17,414
Liked 5511 Times on 2878 Posts
Likes Given: 358

Default

Quote:
Originally Posted by SSGN_Doc View Post
A few variables to consider. Did you put all the Stag trigger parts? The legs of the FCG springs should engage grooves in the pins to keep them from walking. If the holes in the lower are not positioned properly then ther could be inadequate tension, or if the springs are not properly installed it could cause problems with the pins walking.

Then the disconnector that fits in the tail of the trigger has a spring under it. Sometimes folks install the tapered spring upside down so that the narrow part goes in the recess in the trigger tail. This will prevent the disconnector from bring able to seat properly in the groove in the tail under operation. This can cause doubling if shots because it may engage sometimes, but maybe not all the time.

So double check all of those springs for proper orientation. See if someone you know has a proper functioning AR that you can compare things to. See if the hole drilling was done in the proper spacing on your lower. Also do let New Frontier know if your problems if simple troubleshooting doesn't fix your problem. Check for small cracks around the pin holes as well.
ill second this.
__________________

"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith

The problem with being stupid is you cannot simply decide to stop doing dumb things...

JonM is offline  
 
Reply With Quote
Old 02-26-2013, 03:44 AM   #9
Feedback Score: 1 reviews
 
Join Date: Nov 2012
Posts: 1,036
Liked 100 Times on 83 Posts
Likes Given: 42

Default

Quote:
Originally Posted by Squawk View Post
Why would you leave? What suspicion?
Perhaps that someone would think he has tinkered around with the trigger mechanics in order to produce an automatic function, which would be a federal crime? Even if it was an honest mistake in reassembly, I'd rather not have to explain it either if a LEO happened to be present and asked about it.
__________________

A good plan executed today is better than a perfect plan executed at some indefinite point in the future.
- General George Patton Jr

GeneralPatton is offline  
2
People Like This 
Reply With Quote
Old 02-26-2013, 03:54 AM   #10
Feedback Score: 0 reviews
 
Jpyle's Avatar
 
Join Date: Aug 2009
Location: Sewell,NJ
Posts: 4,815
Liked 762 Times on 441 Posts
Likes Given: 457

Default

Quote:
Originally Posted by Squawk View Post
Why would you leave? What suspicion?
That he was possession of a full auto rifle. A malfunctioning semi-auto that fires multiple rounds with 1 trigger pull is a machine gun per BATFE regulations and a brand new machine gun gets you 10 years in the pokey.
__________________

"The whole of the Bill (of Rights) is a declaration of the right of the people at large or considered as individuals.... It establishes some rights of the individual as unalienable and which consequently, no majority has a right to deprive them of." (Albert Gallatin of the New York Historical Society, October 7, 1789)

"A free people ought not only to be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government." - George Washington


Last edited by Jpyle; 02-26-2013 at 03:57 AM.
Jpyle is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Is there a .380acp Round that has some POWER Hollow Point and or +P Round Possibly??? CAMCHAMPION1988 Ammunition & Reloading 7 10-08-2011 06:47 AM
WTS 40 Round AR15 Magazines Lanco Tactical Sponsor Display 0 05-30-2009 01:03 PM
WTS: Lancer L5 Translucent AR15 30 round mags $18.99 AnchorArmament Sponsor Display 10 04-12-2009 07:59 PM
WTS: Lancer L5C 48 Round Translucent AR15 Mag $64.95 AnchorArmament Sponsor Display 3 04-12-2009 07:57 PM
Lancer L5 Translucent AR15 30 round mags $18.99, Free Shipping AnchorArmament Sponsor Display 8 02-08-2009 12:46 PM