Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > AR-15 Discussion > backup bolt carrier group?

Reply
 
LinkBack Thread Tools Display Modes
Old 04-10-2013, 03:22 AM   #31
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
sweeper22's Avatar
 
Join Date: Jul 2009
Posts: 2,350
Liked 228 Times on 181 Posts
Likes Given: 28

Default

I try to keep a few extra BCGs around...for backups, future builds, help a freind out, whatever. It's a critical part that must function flawlessly, and they can be awful expensive and hard to find when you need them "right now". So just like ammo, and mags, I have extra.

Most of mine are either BCM or cerakoted STS Arms.

__________________
"The Future is Unwritten"
sweeper22 is offline  
 
Reply With Quote
Old 04-10-2013, 01:11 PM   #32
Feedback Score: 0 reviews
 
Join Date: Mar 2013
Posts: 7
Liked 3 Times on 2 Posts

Default

Stoner is correct!

__________________
unit147 is offline  
 
Reply With Quote
Old 04-12-2013, 07:35 PM   #33
Feedback Score: 0 reviews
 
StainlessSteel215's Avatar
 
Join Date: Nov 2012
Location: PA
Posts: 821
Liked 282 Times on 204 Posts
Likes Given: 192

Default

Man, I cannot find one ANYWHERE. Tried BCM, tried Palmetto Armory, tried Spike's, tried Midway USA, all out!

__________________
StainlessSteel215 is offline  
 
Reply With Quote
Old 04-12-2013, 08:39 PM   #34
Feedback Score: 0 reviews
 
Quentin's Avatar
 
Join Date: Apr 2010
Location: Idaho
Posts: 6,477
Liked 949 Times on 671 Posts
Likes Given: 948

Default

Quote:
Originally Posted by StainlessSteel215 View Post
Man, I cannot find one ANYWHERE. Tried BCM, tried Palmetto Armory, tried Spike's, tried Midway USA, all out!
Try PSA right now!!! They're in stock at this minute...
__________________

______
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together. You'll remember the quality of a gun long after you forget how much you paid for it.
________________________________________
US Army 1966-69, VFW Life Member, Retired Geek

Quentin is online now  
 
Reply With Quote
Old 04-12-2013, 09:01 PM   #35
Supporting Member
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Sniper03's Avatar
 
Join Date: Jun 2010
Location: Tennessee
Posts: 5,015
Liked 2241 Times on 1122 Posts
Likes Given: 1150

Default

There are some reasons why Bolts Break around a Cam Pin Hole as pictured.
I am sure the BCG that pictured the Locking Lugs broken off was more than likely due to incorrect case hardening and improper Rockwell. To brittle a bolt will break easily! Unless there is a serious chamber problem. (Head Space)
The other issue and most likely is the rifle has been shot an extreme amount and the Throat Erosion is extreme in the barrel.
Another thing that will cause the Bolt to break is a bur in the Cam Pin hole on the Carrier itself.
As far as having to have an extra on hand. If you keep track of the Throat Erosion the bolt should last for a long time and normally never needing replaced. Of course Extractors should be checked and replaced when needed. When do they need replaced? When you can run your thumb or finger across the Extractor Claw lengthwise. The Extractor should have plenty of pressure while pushing out on it as well as the actual Claw should feel sharp when rubbing across it! Same with the Ejector it should be fairly hard to push in! So keep a couple of Ejector Springs and an extra Extractor and Spring around and you should be good to go! As long as you keep an eye on Throat Erosion! A Throat Erosion Gauge can be purchased at Brownells! But if you are having problems with a newer rifle have a gunsmith check the Head Space and Throat Erosion for you to assure it is not defective from the factory. It can happen! Found one last week! Brand New Rifle!

03

__________________

The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
*Patrick Henry

Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom."

-- John F. Kennedy

Sniper03 is offline  
 
Reply With Quote
Old 04-12-2013, 11:50 PM   #36
Feedback Score: 0 reviews
 
StainlessSteel215's Avatar
 
Join Date: Nov 2012
Location: PA
Posts: 821
Liked 282 Times on 204 Posts
Likes Given: 192

Default

Found one!
Stopped by my LGS on way home from work and he had a few RRA BCG's in stock for $199. I trust RRA brand for quality and everything looked good. Chrome lined gas key and bolt housing. Carrier nuts staked nicely, phosphate finish with no stamps so I cannot verify the type of steel or that it was magnetic tested and peened, etc. I DO however trust my LGS because Ive been going there for years and when I asked about the quality of the bolt steel he just looked at me and said "yupp, its good quality steel because well, its rock river!"

__________________
StainlessSteel215 is offline  
 
Reply With Quote
Old 04-13-2013, 12:12 AM   #37
Supporting Member
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Sniper03's Avatar
 
Join Date: Jun 2010
Location: Tennessee
Posts: 5,015
Liked 2241 Times on 1122 Posts
Likes Given: 1150

Default

Stainless

One of the best BCG available today. Good choice!

03

__________________

The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
*Patrick Henry

Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom."

-- John F. Kennedy

Sniper03 is offline  
 
Reply With Quote
Old 04-13-2013, 12:30 AM   #38
Feedback Score: 0 reviews
 
Join Date: Jan 2012
Posts: 3,617
Liked 813 Times on 621 Posts
Likes Given: 125

Default

Tacticool "operators" replace the BCG when a part in it breaks and they didn't actually have nor know how to replace the individual parts.

Having the rest of the parts, especially a sub-assembled bolt, is all the hard core a serious shooter will ever need IMO.

__________________
HockaLouis is offline  
 
Reply With Quote
Old 04-13-2013, 12:32 AM   #39
Feedback Score: 0 reviews
 
StainlessSteel215's Avatar
 
Join Date: Nov 2012
Location: PA
Posts: 821
Liked 282 Times on 204 Posts
Likes Given: 192

Default

Thanks! Man I really have to start calling them first....my LGS rocks and always has! They also had chrome finished BCG's but I figured for an extra $50 is was just for looks and makes cleaning easier...

I appreciate all the info guys, learned a lot in a short time about BCG's and all the parts to it. I would have just ordered a spare bolt but I feel better having the complete assembly just in case. Now, my next step will be to track down an extra bolt so I can keep this RRA BCG on standby in case I get the urge to build a new AR

__________________
StainlessSteel215 is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Bolt Carrier Group question okdonk AR-15 Discussion 2 10-18-2012 10:25 PM
BCM bolt carrier group louieboots AR-15 Discussion 4 07-01-2012 02:46 AM
What do I gain, BCM Bolt Carrier Group connectegr AR-15 Discussion 13 06-13-2012 11:13 PM
Bolt Carrier Group jasonlarue1013 AR-15 Discussion 6 04-20-2012 05:49 PM
Chromed Bolt carrier group Yunus AR-15 Discussion 6 08-07-2010 02:23 AM