Best General Purpose All Around AR-15 under $800

[williejc]

Parts failure discussions remind me of Jeff Cooper's reply when a guy wrote and asked if a certain pistol would endure for the long run. Cooper replied that in the long run we'll all be dead. I think we should be more concerned about chronic failure rather than statistically inevitable occasional failure that reflects problems within the same lot of parts.

[C4IGrant]

So with recent threads of BCM bolts failing to extract, what would you say their failure rate stands at? They also made the customers cover the expense to send it in for repair.

Haven't seen any of these threads. From our experience, people put in the O-Ring in the extractor. The over tensioning tends to cause more problems than it fixes.

Generally, the error (if there is one) is either a stupid user trick (bad ammo, O-ring, no lube, do not clean chamber, etc). So yes, they should pay for shipping. If the error was on BCM's part, then they should cover shipping.

All BCM guns and BCG's are test fired. So they work when they leave the factory.



C4

[Kdubya]

Link?

Official Kremlin Transmission

Try this. The link will take you to the most recent thread. In my post you'll then find a hyperlink to the other recent thread. There are also comments in each thread referencing the BCM extractor/ejector issue on a larger scale.

[Kdubya]

Haven't seen any of these threads. From our experience, people put in the O-Ring in the extractor. The over tensioning tends to cause more problems than it fixes.

Generally, the error (if there is one) is either a stupid user trick (bad ammo, O-ring, no lube, do not clean chamber, etc). So yes, they should pay for shipping. If the error was on BCM's part, then they should cover shipping.

All BCM guns and BCG's are test fired. So they work when they leave the factory.



C4

See post #63 above.

Also, in both instances I believe the O-Ring was not being used in the problem BCGs.

ETA: So if a gun/component is test fired at the factory it's guaranteed to function. Does that apply to any mfg? Because just about every AR in the market would qualify.

[C4IGrant]

See post #63 above.

Also, in both instances I believe the O-Ring was not being used in the problem BCGs.

ETA: So if a gun/component is test fired at the factory it's guaranteed to function. Does that apply to any mfg? Because just about every AR in the market would qualify.

In the one thread that I read, there wasn't sufficient trouble shooting done. For instance, you take the BCG and shoot it in a gun you know runs. While it could be an over tension spring, some of the components in those "home builds" are suspect in my book.

Most AR manufacturers do not test fire their BCG's. We are also not talking about just the ONE proof round.


C4

[Nfd538]

I can't speak to BCMs bolt failure rate, however if my five buddies had BCMs and one had a defective bolt I would say it is 20% among my friends.

It's just math.

Yup that sounds about right

[Sipank96]

20% bolt failure rate.

Seems legit.

lol just because 1 out of 5 came defective in from the factory, automatically there's a 20% failure rate, sure. I've shot all 5 of them and they work just fine. That 1 bolt was an isolated case and he just got unlucky.

[scooter22]

I can't speak to BCMs bolt failure rate, however if my five buddies had BCMs and one had a defective bolt I would say it is 20% among my friends.

It's just math.

Sample size of 5.

Statistically significant?


Official Kremlin Transmission

[556BlackRifle]

Have your BIL watch this video. Grant shot it in Vegas and liked it. (Won the pepper popper comp with it too.) Hopefully he'll chime in.

ETA: This should come in very close to his price.

[websniper]

In the one thread that I read, there wasn't sufficient trouble shooting done. For instance, you take the BCG and shoot it in a gun you know runs. While it could be an over tension spring, some of the components in those "home builds" are suspect in my book.

Most AR manufacturers do not test fire their BCG's. We are also not talking about just the ONE proof round.


C4

What further troubleshooting do you suggest? I posted pretty much my full parts list as well. I'm not fortunate enough to have a whole bin of extractors and springs to try to see if it resolves the problem I'm having, so I asked the mfg to take a look.

I'd think throwing a known functional bolt in the gun and getting the expected functionality was sufficient to indicate a problem with the BCG, but that's why I came here for recommendations. Even IG suggested contacting the mfg...




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