re: OB Gun ninjas, help me buy an AR please.

That should work fine.

Things to look for in a BCG:
- bolt is 9310 or Carpenter 158 Steel
- carrier is 8620
- gas key screws are properly staked. the purpose of staking is so the screws don't walk themselves out.
so if it looks like it will hold the screws from walking, it is
an OK stake job.
- MPI and HPT tested. some are done individually some are done in batches. This tests for imperfections in the steel that could cause the bolt to fracture or fail.

Things to look for in a barrel:
- AR-15 barrels come in a variety of twist rates, which serve different purposes. You choose your twist based on what bullets you will be shooting.
- Popular AR15 Twist and Max Bullet Weight: 1/9 up to 73gr BT, 1/8 up to 80gr BT and lastly 1/7 up to 90gr VLDs.
- 1/7 twist is 'En Vogue' in the AR community because that is what the military uses.
- Most of the 'cheap' factory ammo and milsurp ammo falls in the under 73gr category.
- Barrel should be chrome lined or melonited/nitrided. This prevents corrosion and the hardness adds longevity to the barrel.
- Chrome lining is a lining and therefore cannot be applied perfectly uniform inside the barrel. This is believed to mean that an unlined barrel is inherently more accurate than a lined barrel.
- Nitriding is a treatment to the surface of the metal and does not alter the inside of the bore like chrome lining does.
- Nitriding is also believed to be considerably harder than chrome and therefore last longer before being 'shot out'.
- Some barrels are HPT and MPI tested, just like the bolts mentioned earlier.
- get a mid length gas system unless getting a barrel that is shorter than 14.5 or is longer than 19.9".


If you buy from a quality manufacturer/distributor you will get a quality product. The important thing is you just get a rifle and get shooting.

Spike's, BCM, Windham Weaponry, Palmetto State Armory, Rock River Arms and Smith and Wesson all make rifles in your price range.

You want a good deal? Get THIS and THIS Then buy an upper from any of the companies mentioned above and you'll be good to go for $750ish. Use the remaining money to buy accessories or add a sight.

How hard would it be to change out these handguards?

Gotcha. So there just like regular handguards.

How difficult is it to get a SBR permit and how much does it cost?

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How difficult is it to get a SBR permit and how much does it cost?

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It's not "difficult" to get, but it is a very involved process, and the cost is $200 (and every time the weapon is transferred after, there is a lot of paperwork and a $200 tax).

I don't vouch for how up to date or accurate all of this is, but these guys do seem to know what they're talking about - if you are considering building one from parts. It also discusses the differences betweeen "Form 1" (making the weapon) and "Form 4" (transferring the weapon):

LINK

Id recommend getting a pistol lower before you get a lower with a stock


Actually get what's posted above and let me know how good it works

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So correct me if I'm wrong, but I can't get in any trouble for just having an 11.5" barrel?

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Having just the upper is not a problem.... If you have a unregistered lower in possession with it, even if it isn't put together you can get in trouble.

I've emailed this guy and left him a voicemail. What are the odds I can cancel this purchase?

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If you have a unregistered lower in possession with it, even if it isn't put together you can get in trouble.

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This can't be true. An AR15 pistol is a short barrel upper on an "unregistered" lower. That would mean that everyone with an AR pistol is committing a felony?