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New BCG in a AR556

This is a discussion on New BCG in a AR556 within the Ruger Semi-Auto forums, part of the Rifle & Shotgun Forum category; Thinking about upgrading my stock BCG with one from BCM I'm new to the AR platform and I wonder if some more experienced users could ...


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Old April 4th, 2017, 06:35 AM   #1
 
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New BCG in a AR556

Thinking about upgrading my stock BCG with one from BCM

I'm new to the AR platform and I wonder if some more experienced users could weigh in on the pros and cons.
Thanks for the help!



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Old April 4th, 2017, 08:24 AM   #2
 
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Is the stock BCG giving you problems?? If no, just buy more bullets!

G.
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Old April 4th, 2017, 08:27 AM   #3
 
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Originally Posted by garyji View Post
Is the stock BCG giving you problems?? If no, just buy more bullets!

G.
Pretty much what I was thinking. On the other hand, it never hurts to have a spare. The carrier itself will probably never give you problems. I would suggest to just get the BCM bolt and save some bucks.
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Old April 4th, 2017, 08:30 AM   #4
 
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Yea you're right....no problems
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Old April 4th, 2017, 08:31 AM   #5
 
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Well, in my rather uneducated opinion, if your AR is currently cycling, feeding, extracting, and ejecting properly, a different bolt carrier group is not going to make it shoot better or more accurately.

A common complaint leveled against the AR 556 is its use of a BCG with an unshrouded firing pin. An unshrouded firing pin can result in peening of the firing pin collar or damage to the firing pin retaining pin over time. Despite the possibility, I have heard owners of AR 556s with high round counts say they have not experienced these issues.

Another complaint sometimes leveled against the AR 556 BCG is that the gas key is not always well-staked. If yours is not, it is pretty easy to fix that with a hammer and punch.

The firing pin, firing pin retaining pin, and gas key should be examined every time you clean your carbine so there is little reason to believe that these problems will sneak up on you. A firing pin retaining pin costs about $2. A firing pin costs less than $10. So these parts could be changed many times for the cost of a new BCG. If having a shrouded firing pin makes you rest easier and you have the money, go for it.

I did swap the stock charging handle on my AR 556 for a VLTOR from BCM. The BCM charging handle does have a more robust and positive feel which is something you notice every time you use it.
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Old April 4th, 2017, 08:48 AM   #6
 
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Watch the Palmetto State Armory sales, they have some good deals on BCG's sometimes.

I picked up a very nice Nickle Boron BCG for $99 (free shipping) last week. It was normally $189. Using it for an AR build for my Grandson.

I have no problems with the BCG on my AR556, but it's never a bad idea to have an extra, or for sure extra springs, detent pins, and other parts for you AR's.

Last edited by Beachcityboy; April 4th, 2017 at 09:22 AM.
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Old April 4th, 2017, 01:13 PM   #7
 
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Thanks for the reply's.... I like the idea of a spare BCG, but my main purpose would be to upgrade to a premium part now that I have a few dollars to do so.
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Old April 4th, 2017, 08:23 PM   #8
 
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New BCG in a AR556

Quote:
Originally Posted by JohnnyDB View Post
Thanks for the reply's.... I like the idea of a spare BCG, but my main purpose would be to upgrade to a premium part now that I have a few dollars to do so.


The Ruger is not considered a premium rifle. If you are going to start modifying it to be one, you may as well assemble or buy another one that is. You could get away with a premium upper (like BCM) as this is where most of the critical components are. If you are looking to do practical upgrades that improve your current rifle every time you shoot it, start with the trigger. Trust me from experience. You'll turn that $600 rifle into $1200 frankengun where only original part is the lower. There isn't anything necessarily wrong with that as long as it runs correctly but you'll question why you just didn't get what you really wanted from the get go.
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Old April 5th, 2017, 04:51 AM   #9
 
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+1

Either squirrel the money away until you have enough to buy the "quality" AR you seem to want or buy and stockpile the parts until you have everything you need to build one. I lean toward the later because I enjoy planning and building stuff. Currently easing into my third AR build.

In the meantime, shoot the snot out of your Ruger and enjoy it as is.
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Old April 5th, 2017, 05:29 AM   #10
 
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Originally Posted by jagular View Post
The Ruger is not considered a premium rifle. If you are going to start modifying it to be one, you may as well assemble or buy another one that is. You could get away with a premium upper (like BCM) as this is where most of the critical components are. If you are looking to do practical upgrades that improve your current rifle every time you shoot it, start with the trigger. Trust me from experience. You'll turn that $600 rifle into $1200 frankengun where only original part is the lower. There isn't anything necessarily wrong with that as long as it runs correctly but you'll question why you just didn't get what you really wanted from the get go.
I've thought about that exactly.
I shoot lefty so I made some minor mods, ambi safety, ambi mag release and ambi charging handle. That got me going so I did what you pointed out. I found a deal on a single stage Timney 4lb trigger and dropped that in. Needless to say that made a improvement in the AR556 performance so I thought a BCG upgrade would complete the pkg.
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Old April 5th, 2017, 05:57 PM   #11
 
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Originally Posted by JohnnyDB View Post
I've thought about that exactly.

I shoot lefty so I made some minor mods, ambi safety, ambi mag release and ambi charging handle. That got me going so I did what you pointed out. I found a deal on a single stage Timney 4lb trigger and dropped that in. Needless to say that made a improvement in the AR556 performance so I thought a BCG upgrade would complete the pkg.


It's a rabbit hole for sure. A high end BCG won't make any difference in the rifle. All it will do is give you piece of mind. The next upgrade that might make a difference in performance (felt recoil) would be to swap out the carbine buffer for an H or H2 and spring. Of course, if it runs fine why even bother?
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Old April 6th, 2017, 05:40 AM   #12
 
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You are putting lipstick on a pig. I can understand you wanting to make the rifle ambidextrous but a better bolt won't change anything but maybe give you some peace of mind like jagular said. The better bolt comes in when you are running and gunning and shooting lots of rounds from a hot rifle using full power G.I ammo. If you are not doing that I would spend the difference on more ammo.

kwg
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Old April 6th, 2017, 08:24 AM   #13
 
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Originally Posted by kwg020 View Post
You are putting lipstick on a pig. I can understand you wanting to make the rifle ambidextrous but a better bolt won't change anything but maybe give you some peace of mind like jagular said. The better bolt comes in when you are running and gunning and shooting lots of rounds from a hot rifle using full power G.I ammo. If you are not doing that I would spend the difference on more ammo.

kwg
Good advice on the ammo....a little over the top on the pig reference, it is what it is.... a basic AR that shoots real well as is and with a couple of upgrades maybe a little bit better.
What is your go to AR?
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Old April 6th, 2017, 10:50 AM   #14
 
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If the BCG is doing its job leave it alone and spend your money on magazines & ammo.
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Old April 6th, 2017, 01:35 PM   #15
 
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Hmmm... my opinion? Don't fix something that ain't broke.

I'd spend that money on more ammo, or a better trigger.
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