AR-15 ? Bolt won't stay open after last RND
07-14-2008, 10:42 AM
#1
Spike
Thread Starter
Join Date: Feb 2003
Location: Overtaxed NewYork Kiribati
Posts: 62
AR-15 ? Bolt won't stay open after last RND
Hi Gun Forum, Have a question about my AR15. For some reason my bolt will not remain in the open postion after I fire my last round. Any ideas how I can correct this problem ? Thanks Steve
07-14-2008, 02:07 PM
#4
Join Date: Aug 2004
Location: Columbia, Md.
Posts: 1,211
RE: AR-15 ? Bolt won't stay open after last RND
X3
Was going to say magazine but wanted to look at mine to see how the follower engages the bolt catch. Might be a bent pin under the receiver?
Easiest thing is to try a different mag and see if the problem persists.
Was going to say magazine but wanted to look at mine to see how the follower engages the bolt catch. Might be a bent pin under the receiver?
Easiest thing is to try a different mag and see if the problem persists.
07-14-2008, 02:32 PM
#5
Nontypical Buck
Join Date: Feb 2003
Location: Body in SE WI, mind in U.P.
Posts: 4,781
RE: AR-15 ? Bolt won't stay open after last RND
Magazine would be the first thing to check as its the most likely.
If not:
Check your bolt release for damage/wear.
What ammunition are you using? Are you having any problems with the action shortstroking? Have you tried different ammo?
Was the upper assembled at a factory?
If not:
Check your bolt release for damage/wear.
What ammunition are you using? Are you having any problems with the action shortstroking? Have you tried different ammo?
Was the upper assembled at a factory?
07-15-2008, 06:41 PM
#7
Spike
Thread Starter
Join Date: Feb 2003
Location: Overtaxed NewYork Kiribati
Posts: 62
RE: AR-15 ? Bolt won't stay open after last RND
I have tried different magazines and the problem still occurrs, also there seems to be an occassional problem when the action cycles put the firing pin will not strike the primer on the follow up shot. Regards Steve
ps ammo is south afrikan 55gr.
ps ammo is south afrikan 55gr.
07-15-2008, 07:38 PM
#8
Giant Nontypical
Join Date: Sep 2005
Posts: 6,867
RE: AR-15 ? Bolt won't stay open after last RND
south african ammo there your proplem buy good ammo
ORIGINAL: steve d
I have tried different magazines and the problem still occurrs, also there seems to be an occassional problem when the action cycles put the firing pin will not strike the primer on the follow up shot. Regards Steve
ps ammo is south afrikan 55gr.
I have tried different magazines and the problem still occurrs, also there seems to be an occassional problem when the action cycles put the firing pin will not strike the primer on the follow up shot. Regards Steve
ps ammo is south afrikan 55gr.
07-15-2008, 11:17 PM
#9
Nontypical Buck
Join Date: Feb 2003
Location: Body in SE WI, mind in U.P.
Posts: 4,781
RE: AR-15 ? Bolt won't stay open after last RND
I have tried different magazines and the problem still occurrs, also there seems to be an occassional problem when the action cycles put the firing pin will not strike the primer on the follow up shot. Regards Steve
ps ammo is south afrikan 55gr.
ps ammo is south afrikan 55gr.
Try different ammo first- SA ammo will be on the hot side if anything.
If the firing pin isn't striking, it might be because the bolt isn't locking all the way- either you have a dirty chamber, a headspace problem (not likely but possible) or the ammo is out of spec.
Who or what company assembled your upper?
07-24-2008, 02:22 PM
#10
Typical Buck
Join Date: Nov 2005
Location: Livonia,new york
Posts: 564
RE: AR-15 ? Bolt won't stay open after last RND
i would take a mag apart and stretch the spring a little bit and try that
could be the ammo too
had a problem with my model 1 sales upper too
turned out i just needed to stretch the spring out in my 5 round mag
now she works like a charm
could be the ammo too
had a problem with my model 1 sales upper too
turned out i just needed to stretch the spring out in my 5 round mag
now she works like a charm