That's why when a person tells you they bought a perfect Bushmaster you should tell them to go buy a lottery ticket too with that kind of luck!
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That's why when a person tells you they bought a perfect Bushmaster you should tell them to go buy a lottery ticket too with that kind of luck!
Never mind....
exitinyourhead wrote:
"My Rock River arms AR has some of these same issues with it... (Castle nut not staked at all, not quite proper staking of gas keys.) I've yet to have an issue with it caused by these problems but I haven't put 2000 rounds through it yet and may sometimes."
The above may never give you a problem.
If this is a plinker, no problem.
If it is used for social purposes, this may cause you a problem.
Case in point:
One of my guys has a RRA that he uses on duty (he obtained it prior to me prohibiting RRA and some other brands, so he was able to "grandfather" it).
Last fall, he attended my 3 day basic rifle class, during which we fire 750 rounds per person.
Previously, had had fired a couple hundred rounds through it over about 3 yrs w/o encountering any problems whatsoever.
Prior to the class, I found the castle nut was loose. I staked it.
I also staked the allen head bolts on the gas key to prevent them from loosening.
While inspecting the rifle, I found that the feed ramps in the receiver had been dremeled. No parkerizing present, and the framps in the receiver and the barrel extension didn't mate up very well. Good thing that we don't use 75 or 77 grn ammo, or he might have some serious problems there.
During the class, he had a number of FTEs. I changed out the extractor spring and insert for a SAW HD spring and black insert. No more problems.
We also noticed that the 2 stage "match" trigger group he had wasn't detonating primers 100% (we were using a mix of Federal, PMC, and Winchester ammo). This required installation of a GI-type trigger group.
Once the above was complete, he had a functional rifle.
Too bad it didn't leave the factory that way.
I feel the same way about BMI.
I guess the pictures dissappeared, I can't see them. I bought a Bushmaster M4 at the beginning of the year, and would like to go ahead and fix these issues if they are gonna be a problem.
I'm curious about the extractor spring you guys have been mentioning. Is it really necessary? My Bushy M4 carbine throws brass at least 15 feet with the stock stuff.
I'd really like to see the pics of the staking and such, did the pics get moved on the hosting site?
I paid $925.00 at a retail gun store (local, not internet) for this Bushy at the beginning of Februrary, so I don't feel I was 'ripped off' even if I have to go back into the gun and tighten a few things.
My next AR will probably be a different company, but not cause I think Bushy sucks, I just don't see the point of owning two of them when there is so many other companies to try.
I have! But I have not had that kind of luck with Lotto tickets so far (I still keep buying them though). :D
I actually own three BM ARs that have not had any issues so far. These are: CMP rifle (post-ban), 16-inch CAR-15 (no-ban), and a 24-inch Varminter that I've shot out to more than 900-yards and have used in an Urban Sniper Course.
Other than some sort of bonehead move on my part (I closed the bolt of the Varminter on a chamber safety flag which caused a jam that required the use of a multi tool, a screwdriver, and a folder to clear out - this resulted in a non-locking charging handle that would smack me in the nose on the last shot); I have not had any problems that I could not attribute to the gun. YMMV.
I WANTED TO ADD: My current primary AR is a 10.5" LWRC upper (M6A1) mounted on an SBR'd RRA lower that I assembled. My backup upper is a 10.5" LMT. My backup gun is the 16-inch BM M4 (which lives in the same closet as my Remington 870). While I have not had any issues with all of my 3 BM rifles; this doesn't mean I advocate buying these over some of the (proven) Tier 1 makers out there. I'm just pointing out that they do let some quality rifles out the door once in a while. JM2CW.
There is a reason to upgrade the extractor spring and insert on a carbine.
The bolt and carrier cycle MUCH faster on a carbine than on a rifle. This can lead to problems:
-bolt bounce
-outrunning the mag's ability to feed
-fail to extract
The 1st problem is mostly a problem with full auto fire, and can be remedied by a H1, H2, or H3 buffer.
The 2d problem can be a problem with certain bullet profiles, weak mag springs, and is mostly a problem with full auto fire. This can be solved with M4 feed ramps, and good mag springs
The 3rd issue can occur in either auto or semi-auto fire. The extractor does not have enough tension to keep hold of the extractor rim, resulting in FTE's.
This is why you see the use of black inserts, HD extractor springs, O-rings, etc. on carbines. All provide greatly increased tension to help the extractor do its job.
It's a simple, inexpensive thing to do. Some companies do it. Others will have you believe the rifle spring and insert is "just as good as".
My experience says that it isn't.