Double Star AR 15 (Don't Buy!)

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This is why when people say "you don't need loctite, and you don't need to stake your castle nut" those who know better just shrug and give up on them.

Again, if you stake the nut and then decide you want a new end plate, you're gonna need a new tube as well. The threads on the tube will be damaged by backing off a staked nut; It's aluminum.

If you wanna use anaerobic thread compounds, go right ahead. These won't cause the threads to be damaged, just will require the wrench be used for most of the backing off, rather than just breaking the nut loose.

Threaded fasteners, when properly torqued, generally do not need to be peened or thread locked. Do you loctite your wheel lug nuts?
 
I'm not a Doublestar fan, in fact I would NEVER even buy parts from a bottom of the barrel manufacturer, but it has nothing to do with this thread, or others like it.

Did not think they were top of the barrel, but don't understand how they could be at the bottom.
 
The first rule, especially in buying a used gun, is caveat emptor.

And, I would not expect a gun shop to completely tear down a used rifle and function check it and guarantee absolutely nothing wrong with it. Most are sold "as is." If they did tear it down, the usual check on the buffer would be to push in with a finger and let it go. If it springs back and is held by the pin it's good. Not sure the problem didn't happen after you fired a few rounds.

You're lucky in that it's a simple and cheap fix. Even if you've lost confidence in it as a defense piece, it will still be a perfectly serviceable range gun.

As others have noted, you don't need a BFA, or a dust cover. Can't imagine giving up a perfectly good S&W just to get these unnecessary appendages.

Finally, although Doublestar does give a lifetime warranty, it's clear in the owner's manual (read it on pg.31) that this applies to the original owner who must register it. And, the warranty does not read the way you reported. Can't imagine someone saying that putting a scope on a rifle would void the warrranty. At any rate, YOU are not entitled to the warranty. You are limited to politely asking for assistance. Again, caveat emptor.
 
He never claimed the shop represented it as new.
and I never implied that they did represent it as new. However, the company has no obligation to him whatsoever as a 2nd hand owner, meaning if he had a bone to pick with anyone, it'd be the shop where he purchased the rifle....THEY provided him with the defective product, not DSC. Being mad at Doublestar for not fixing someone else's mistake doesn't make any sense, and shows a gross misunderstanding of the warranty. Too, I have NO reason to believe that swapped handguards or optics void the warranty. NOTHING in the manual that came with my NEW DSC rifle makes such a claim.
 
Again, if you stake the nut and then decide you want a new end plate, you're gonna need a new tube as well. The threads on the tube will be damaged by backing off a staked nut; It's aluminum.

I've removed two staked castle nuts, one was loctited on, with no damage to the other parts. It was slightly more difficult to break the piece of aluminum from the staking off, but it shears right off using the spanner wrench and the rest is cake.

Did not think they were top of the barrel, but don't understand how they could be at the bottom.

The barrel has a big bottom :uhoh:
 
I've removed two staked castle nuts, one was loctited on, with no damage to the other parts. It was slightly more difficult to break the piece of aluminum from the staking off, but it shears right off using the spanner wrench and the rest is cake.

I just put a QD endplate on my rifle last week. It was indeed more work to break the staking loose, but nothing was damaged. I used a little blue thread locker upon re-installation.
 
I have not had any issues with DS and with buying used ARs it's very much buyer beware as there are so many kitchen gunsmiths out there who think they know what they're doing but don't.
 
That's actually a minor fix. OP you need to read up, research, or even just watch youtube vids on how to put an AR together. If this is your second AR, you should know how to function check its basic components.

Like others said, that buffer tube is still reusable. Get a new spring and buffer tube retaining pin.

As far as DoubleStar's warranty, well thats another issue.
 
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