Ar 15 light primer strike
You are Unregistered, please register to use all of the features of FirearmsTalk.com!    


Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > AR-15 Discussion > Ar 15 light primer strike

Reply
 
LinkBack Thread Tools Display Modes
Old 11-03-2013, 10:09 PM   #1
Feedback Score: 0 reviews
 
brshoot's Avatar
 
Join Date: Jul 2012
Posts: 1
Default Ar 15 light primer strike

I have a s&w ar15. I just installed a Midwest industry 12 inch quad rail. Torque the barrel nut @ 70lbs to properly align gas tube. I also polished my trigger & shorten 1 ear of hammer spring I've done this b4. Out of 40 rounds i had a light primer strike. Im worried about my rail install. Could i have caused this?


brshoot 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 11-03-2013, 10:51 PM   #2
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Mercator's Avatar
 
Join Date: Sep 2013
Posts: 8,476
Liked 4112 Times on 2796 Posts
Likes Given: 2038

Default

Quote:
Originally Posted by brshoot View Post
I have a s&w ar15. I just installed a Midwest industry 12 inch quad rail. Torque the barrel nut @ 70lbs to properly align gas tube. I also polished my trigger & shorten 1 ear of hammer spring I've done this b4. Out of 40 rounds i had a light primer strike. Im worried about my rail install. Could i have caused this?
I can't see how a rail would affect the ignition. Did you shoot the rifle b4 the upgrade? What did you want to accomplish by shortening the spring?


Mercator is offline  
 
Reply With Quote
Old 11-03-2013, 11:59 PM   #3
Feedback Score: 0 reviews
 
sweeper22's Avatar
 
Join Date: Jul 2009
Posts: 2,630
Liked 328 Times on 263 Posts
Likes Given: 49

Default

1) Might be nothing to worry about if it only happened once. Dud round, anomalous situation...you get the point. Shtuff happens.

2) If it's a recurring problem, the first step is to clean up your BCG. Sometimes a bit of dirt/grease/grime can impact the movement and resulting reach of the firing pin. Some brand new BCGs actually leave the factory greased to the point where this sort of failure occurs right out of the gate if they're not cleaned up before installation.
__________________
"The Future is Unwritten"
sweeper22 is offline  
 
Reply With Quote
Old 11-04-2013, 12:53 AM   #4
Feedback Score: 0 reviews
 
Join Date: Sep 2012
Location: The Great North Woods
Posts: 2,565
Liked 2055 Times on 1074 Posts
Likes Given: 392

Default

What is your ammo choice? I would not get in a twist over 1 round
chloeshooter is offline  
 
Reply With Quote
Old 11-04-2013, 01:21 AM   #5
Moderator
FTF_MODERATOR.png
Feedback Score: 0 reviews
 
JonM's Avatar
 
Join Date: Nov 2009
Location: Rochester WI,Rochester WI
Posts: 19,172
Liked 6727 Times on 3582 Posts
Likes Given: 504

Default

modifying the hammer spring will cause light strikes you need a new spring.
__________________
"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...

"I crapped my pants to avoid the draft!!" -Ted Nugent
JonM is offline  
purehavoc Likes This 
Reply With Quote
Old 11-04-2013, 03:02 AM   #6
Feedback Score: 0 reviews
 
mountaineergunner's Avatar
 
Join Date: Nov 2013
Posts: 8
Liked 4 Times on 2 Posts

Default

Quote:
Originally Posted by brshoot View Post
I have a s&w ar15. I just installed a Midwest industry 12 inch quad rail. Torque the barrel nut @ 70lbs to properly align gas tube. I also polished my trigger & shorten 1 ear of hammer spring I've done this b4. Out of 40 rounds i had a light primer strike. Im worried about my rail install. Could i have caused this?
I have seen this mod b4. Im not a fan of shortening the spring because what your experiencing is common when this is done. Your going to need to get you a new spring. I tried playing with a trigger to make it better the polishing does make it smoother an I do it to all my guns that have stock triggers. But I highly recommend a adjustable trigger after market if you want a good light feeling trigger. Im a fan of a temney but thats just me.
mountaineergunner is offline  
 
Reply With Quote
Old 11-04-2013, 04:47 AM   #7
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Quentin's Avatar
 
Join Date: Apr 2010
Location: Idaho
Posts: 6,834
Liked 1158 Times on 813 Posts
Likes Given: 1180

Default

I also think you should replace the modified hammer spring with a proper one.
__________________
______
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
________________________________________
US Army 1966-69, VFW Life Member, Retired Geek
Quentin is offline  
 
Reply With Quote
Old 11-04-2013, 10:46 PM   #8
Moderator
FTF_MODERATOR.png
Feedback Score: 1 reviews
 
robocop10mm's Avatar
 
Join Date: Jul 2007
Location: Austin,Texas, by God!!
Posts: 10,740
Liked 3358 Times on 1739 Posts
Likes Given: 354

Default

A sweet trigger does you no good when the gun does not reliably go bang


__________________
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball
robocop10mm is offline  
purehavoc Likes This 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Light Primer Strike after changing Buffer Assy KG7IL AR-15 Discussion 7 08-06-2013 05:01 AM
Light strike issue on sr 40c gearhead396 Ruger Handgun Forum 6 02-16-2013 07:52 PM
Light pin strike BrokenArsenal Mini-14 Forum 7 01-25-2013 07:08 PM
FNC Light Primer Strikes shall NFA/Class 3 & FFL Discussion 1 07-03-2012 08:33 AM
Strike Two dnthmn2004 Semi-Auto Handguns 7 01-25-2010 03:45 PM



Newest Threads