My Bushmaster worked as designed !?


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Mags
April 7, 2010, 11:02 PM
Just got a helluva deal on a Bushmaster LE fully accessorized with my preference of furniture and finish. Anyways this gun has all the factory Bushmaster BCG and buffer. I have read Bushmaster BCGs are garbage and was skeptical of the deal I made, and had planned on purchasing a Bravo Co. BCG along with an H buffer. But after everything working so well today should I replace the innards? This rifle as always must be 100 percent reliable. Thanks for the input.

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hmphargh
April 7, 2010, 11:04 PM
If it ain't broke...

Z-Michigan
April 7, 2010, 11:10 PM
If it must be 100% reliable, I would get a BCM bolt or even a complete carrier group.

For most of us who aren't LE (I don't know whether you are), the stock bolt is likely just fine for most uses.

Mags
April 7, 2010, 11:12 PM
I need this to be reliable mostly for training, alot of carbine classes.

Nugilum
April 7, 2010, 11:16 PM
^^ Then get the BCM BCG.

TonyAngel
April 7, 2010, 11:27 PM
Have you shot it enough that you feel that it's reliable?

If it's working, I really don't see how going with a BCM BCG is going to make it more reliable. There's nothing, that I know of, wrong with Bushmaster equipment. It's good stuff. If you just want a bit of insurance, you could replace the ejector/spring and extractor/spring with "mil spec" parts from BCM. Those are what usually cause a rifle to malfunction. That is, weak springs and extractor/ejector. You might also want to get a couple of extra cam pins, just in case the one you have wears more quickly than it should. You should change those regularly anyway. They're cheap enough. Lastly, check out the gas key and make sure that the screws are properly staked in. Other than those things, I can't see the bolt or carrier themselves failing. I'd think that if they were going to, it would have happened in the first 1K rounds.

As a side note, I do keep a spare bolt assembly and firing pin, but that's something that everyone should have because any bolt assembly could give you trouble at the worst time and having a complete spare makes fixing the problem less time consuming.

Z-Michigan
April 7, 2010, 11:30 PM
The bolt itself often fails at some point, either a lug shearing off or the bolt cracking at the cam pin hole. The BCM bolt is advertised as being the correct truly mil-spec steel and being shot peened, both of which help strength and durability. The Bushmaster bolts aren't so advertised and are not believed to be shot peened (per "the chart"). They may or may not be the mil-spec steel.

Having said all that, I am completely unaware of any known or reputed issues with Bushmaster bolts.

StarDust1
April 8, 2010, 12:17 AM
Dump the stock BCG and replace it with a DD BCG, then have the stock unit properly staked and keep it for a back up(Bushmaster BCG are still batch tested as opposed to magnetic particle tested)BCG!
DD is the best BCG available for the money, you could also replace the buffer but this is IMO not a big deal. I'd also consider replacing the barrel with a 1:7 twist so you can rely on it with the heavier weight bullets, aside from that I'd also consider replacing the trigger assembly.

rskent
April 8, 2010, 05:50 AM
Just go shoot the thing. If you wanted a Colt, maybe you should have bought a Colt. No, you bought a Bushmaster.
Donít waste your money replacing parts that arenít broken. Start saving for the Colt you should have bought in the first place.

Having got that off my chest, Bushmaster rifles are not garbage. Bushmaster bolt carrier groups and bolts are not garbage.
I have put a lot of rounds through my Bushmaster. Many thousands of rounds without a single part failure. I do have to
admit the firing pin retaining pin is looking a little weak.

Now, post a picture of your new rifle. Then go shoot the snot out of it.
Let us know how that carrier group holds up.
Steve

jimmyraythomason
April 8, 2010, 07:24 AM
are garbage Mags,just remember,when someone uses that term to describe a firearm or accessory they are usually just parroting hearsay(usually obtained from the internet). I ALWAYS ignore all "are garbage" accessments especially if they conflict with my own experience.

DMK
April 8, 2010, 07:35 AM
I need this to be reliable mostly for training, alot of carbine classes. I agree with the poster that said replace the bolt and keep the original for a backup. Test/break in the new bolt thoroughly at the range.

Bartholomew Roberts
April 8, 2010, 07:38 AM
Bushmaster BCG's are not garbage. They are not first rate either; but they are a long way from being made out of egg cartons. I would recommend buying a spare bolt and making sure your bolt carrier group is properly staked.

A spare bolt is good to have on hand regardless of what brand you buy because it is a quick fix for all of the following problems:

1. Broken bolt/lugs
2. Bad gas rings
3. Worn extractor
4. Weak extractor springs
5. Extractor lift
6. Bound ejector/weak ejector spring
7. Excessive firing pin protrusion

When you can address all of those issues in a single, quick swap it saves you diagnostic time and down time when you are training. Besides that, the bolt is a common failure point as you put a lot of rounds through the rifle, so you are planning for the future.

As far as the H-buffer, it will depend on your gas system. My preference is H-buffer for carbines and carbine buffer for midlengths (unless you are using suppressors, then you need to kick up to an H2 and H respectively).

FWIW, I've got around 14k rounds on three different Bushmaster BCGs (all improperly staked by the way) and so far, no loose gas keys or broken bolts. I have seen Bushmasters shoot loose their gas key, so it does happen; but staking them properly is a cheap and easy fix. I've also seen broken bolts firsthand; but only two and both DPMS chromed bolts circa 2001.

Z-Michigan
April 8, 2010, 11:34 AM
FWIW, I've got around 14k rounds on three different Bushmaster BCGs (all improperly staked by the way) and so far, no loose gas keys or broken bolts. I have seen Bushmasters shoot loose their gas key, so it does happen; but staking them properly is a cheap and easy fix. I've also seen broken bolts firsthand; but only two and both DPMS chromed bolts circa 2001.

How dare you bring personal, first-hand real-world knowledge into this debate! This is the internet! :)

I have two Bushmasters, far lower round count, no problems with mine either. One has a properly staked carrier key, other does not.

If you wanted a Colt, maybe you should have bought a Colt. No, you bought a Bushmaster. *** Start saving for the Colt you should have bought in the first place.

I don't see anywhere that he's asking about Colt or indicating he wanted one. Colt is not generally considered the best any more, at least not any better than certain other brands that cost less. They thrive based on advertising, fanboys, and a military contract that is based entirely on politics.

DD is the best BCG available for the money

While Daniel Defense is another quality make, where do you get the idea that they are the best for the money? They tend to cost $10-20 more than a BCM group, and the very best reviews I've read are of BCM. Assuming, of course, that there is actually any difference in quality between the two, which there may not be.

kamagong
April 8, 2010, 11:46 AM
I would recommend buying a spare bolt and making sure your bolt carrier group is properly staked.


Sage advice.

Mags
April 8, 2010, 11:50 AM
One of my local carbine instructors and rangemaster checked that the Bushy bolt is properly staked and it is, I also checked myself and it looked good. Probably going to replace the BCG with a BCM and keep the BM BCG for spare.

RSVP2RIP
April 8, 2010, 11:58 AM
Well a new BCG is a relatively inexpensive thing when you think about it. A spare bolt is even cheaper. I'd keep the bolt carrier and just grab an extra bolt, your choice of makers. Keep it in one of Magpuls grips, along with a spare firing pin and don't ever worry again. Is peace of mind worth $40 or $150?

StarDust1
April 8, 2010, 01:13 PM
How dare you bring personal, first-hand real-world knowledge into this debate! This is the internet! :)

I have two Bushmasters, far lower round count, no problems with mine either. One has a properly staked carrier key, other does not.



I don't see anywhere that he's asking about Colt or indicating he wanted one. Colt is not generally considered the best any more, at least not any better than certain other brands that cost less. They thrive based on advertising, fanboys, and a military contract that is based entirely on politics.



While Daniel Defense is another quality make, where do you get the idea that they are the best for the money? They tend to cost $10-20 more than a BCM group, and the very best reviews I've read are of BCM. Assuming, of course, that there is actually any difference in quality between the two, which there may not be.
Nice try, the DD BCG is the exact same one marketed by BCM...:)

12131
April 8, 2010, 01:23 PM
Shoot the heck out of it, then see for yourself. If it ain't broke, leave it alone. Wouldn't lose too much sleep over the-best-this-the-crap-that you see so much on the net.

DoubleTapDrew
April 8, 2010, 01:31 PM
Nice try, the DD BCG is the exact same one marketed by BCM...
So what do you get for the extra $ of the DD one? I can't find anything done incorrectly on my BCM BCG.

dom1104
April 8, 2010, 01:41 PM
I have the DD bcg, at the time it was pretty darn cheap I thought.

I do agree, spart parts for any gun is a good idea.

Z-Michigan
April 8, 2010, 01:56 PM
Nice try, the DD BCG is the exact same one marketed by BCM...

Clarity helps, especially when you're trying to say something. What are you trying to say? That DD manufactures the BCG that is sold by BCM under the BCM name? Or that BCM manufactures the BCG that is sold by DD under the DD name? Or that both companies are putting their names on a BCG made by some third party? It's not at all clear.

And what benefit do you get for the extra $10-20 cost of the DD-marked group?

TonyAngel
April 8, 2010, 04:50 PM
Enjoy your Bushy. I know that I've enjoyed mine and it's had thousands of round through it. What really sucks about preventive measures is that it's always something that you thought was going to be ok that breaks. LOL.

rskent
April 8, 2010, 06:30 PM
Z - Relax man, I was just poken a little fun at Mags

Mags Ė I still would like to get a look at your new rifle.

Steve

Mags
April 8, 2010, 06:44 PM
It will come just give me a lil time.

jonboynumba1
April 8, 2010, 06:53 PM
Here's what I have seen...some BM bolt carriers gas keys are not properly staked....most all of the newer rifles are...because of customer feedback (and forums like this) they know people look for that now and that the lack of that diminishes customer satisfaction.

The thing is...properly staking one that is not takes like 30 seconds...it's NOT a big deal. You can even take one not or improperly staked and put the screws in with loctite RED and be GTG...you'll have to heat them up to change them...but when do you really EVER change a gas key on an AR? I know a dude that has assembled his bolt carriers that way and never had a problem (would not be my choice...because...well...properly staking them takes 30 seconds on the bench!

I know a guy who's department bought a bunch of earlier BM rifles years ago and upon putting them through the ringer a FEW had problems in that area....he tightened back down and staked them nice and heavy like an older Colt...Worst case senario you break or strip or lose a screw or two...but again...it takes 30 seconds to correct in the time one of these internet threads takes to read you could properly stake every AR any of us has ever owned (assuming any of them need it...and most will NOT)

Parts for AR's....stay major manufacturer...and you'll likely be OK! Mags stay USGI or Colt that drop fre from your lower and that you've loaded 4-6 rounds and shot empty a few times each to check function...and you'll be OK...shoot US made quallity brass cased ammo...and you'll be OK...Buy a quallity rifle....feed it quallity ammo from decent mags and it's as reliable a rifle as anything out there....buy rifles or parts from century and/or model1sales or SGN and parts from parts unknown=jamo-o-matic

That is everything you need to know about the AR except how to clean service zero and use one properly. FWIW I sell AR's of various manufacture...I look them over before they leave the shop...I think I've re-staked ONE BM in the last 5 years that needed it. It's not a big deal anywhere but the internet! And no...I don't even own a BM so I don't have a poney in these threads...Colt and RRA are my prefference...though RRA's customer service really seems to suck these days and I no longer sell them unless somebody just has to have one...thankfully LOTS of people are making decent AR's these days.

FWIW I wouldn't replace anything in a working rifle because of something I read on the internet...if it works run it...if you think you'll break it...buy spares...no big deal...spare parts are always a good idea! As long as they come from a quallity US manufacturer I wouldn't worry about what they are or are not stamped.

Mags
April 8, 2010, 06:55 PM
Thanks Jon Boy, I am not new to ARs but I am new to Bushmaster. Just don't want the thing failing me.

benEzra
April 8, 2010, 09:16 PM
Sounds like you've already checked the gas key screw staking, so you don't need a whole BCG. For the carbine classes, you might consider picking up a Bravo Company bolt for under $70, which takes care of bolt and extractor concerns, and you can keep the Bushy bolt as a spare. If you're running a carbine-length gas system, make sure you get the bolt with the correct extractor setup. Upgrading the buffer might be a good idea, but if the rifle is running 100% as-is, that's not as critical as the gas key staking and the extractor are.

If you're paying $500 or $1000 and taking off work to go shoot a carbine class, and your rifle goes down halfway through causing that money to be wasted, that's a whole lot more expensive than having a spare bolt.

Mags
April 8, 2010, 10:36 PM
I still would like to get a look at your new rifle.
Pics can be found here.http://www.thehighroad.org/showthread.php?t=516435

Birddog1911
April 8, 2010, 10:45 PM
Sage advice.
I'd bet that if you looked in the range bags of serious competitors, regardless of their brand, th y'd have a spare bolt in the spare parts kit.

WYcoyote
April 10, 2010, 09:24 PM
You have already mentioned the thing I would do.
Get the BCM BCG, test it well, and keep the BM BCG for your spare.
And not because the BM is junk, but I would give the BCM the edge in reliability.
If you are going to classes and need to keep shooting, you should have a spare anyway.

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