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Please explain barrels- I see references in ads for 14.5' barrels. doesn't some one like me need a 16'?

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Dubi - adding an ambi safety to my 15-22 is on my to-do list, why will S&W parts be my only option?

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I was incorrect above about M&P being sole source. Mr dubi says 15-22 ambi's are just not common.

"Pricey" because they cost 2 x as much as AR ambi.

He bought me this one.

Dr Boogs, you can try mine when we go shooting!

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Question about handguard length

I am building a 300 blk that will eventually be a 2 stamp gun.

1st, what are the main differences besides length in a 9" and 10.5" 300 blk out barrel? Does the length affect sound suppression or ability to run subs?
Not past 8" which is generally accepted as the optimum length barrel for 300 blk.

2nd - choice of Handguard length. There are both 9" and 10.5" handguard lengths. If I buy a 10.5" barrel and 10.5 handguard, will the handguard extend past the barrel? I plan on adding just a basic flash hider till I choose a can and wait 9 months for the stamp.
The handguard will extend to the end of the barrel (past the threads). Most people that run cans on weapons with less than 10" barrels get handguards that cover some if not all of teh can as well to extend a rail another few inches.

I have not assembled an AR before, but this thread has given me the assurance that I can do it.

I didn't know how with a barrel nut and how the handguard marries up if a 10.5 handguard will stick out further than a 10.5" barrel without a flash hider already attached.

Thanks y'all!

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HBecause the M&P 15-22 uses a non-standard lower and receiver extension, you have to use the BAD lever. I don't recall where I got it; from BAD, Joe Bob's, Primary Arms or someplace else.

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HBecause the M&P 15-22 uses a non-standard lower and receiver extension, you have to use the BAD lever. I don't recall where I got it; from BAD, Joe Bob's, Primary Arms or someplace else.

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http://www.battlearmsdevelopment.com/bad-ass-st-short-throw-ambi-safety-selector-ar15-ar10r

This one?

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Question about handguard length

I am building a 300 blk that will eventually be a 2 stamp gun.

1st, what are the main differences besides length in a 9" and 10.5" 300 blk out barrel? Does the length affect sound suppression or ability to run subs?
Not past 8" which is generally accepted as the optimum length barrel for 300 blk.

2nd - choice of Handguard length. There are both 9" and 10.5" handguard lengths. If I buy a 10.5" barrel and 10.5 handguard, will the handguard extend past the barrel? I plan on adding just a basic flash hider till I choose a can and wait 9 months for the stamp.
The handguard will extend to the end of the barrel (past the threads). Most people that run cans on weapons with less than 10" barrels get handguards that cover some if not all of teh can as well to extend a rail another few inches.

I have not assembled an AR before, but this thread has given me the assurance that I can do it.

I didn't know how with a barrel nut and how the handguard marries up if a 10.5 handguard will stick out further than a 10.5" barrel without a flash hider already attached.

Thanks y'all!

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Question about handguard length

I am building a 300 blk that will eventually be a 2 stamp gun.

1st, what are the main differences besides length in a 9" and 10.5" 300 blk out barrel? Does the length affect sound suppression or ability to run subs?
Not past 8" which is generally accepted as the optimum length barrel for 300 blk.

2nd - choice of Handguard length. There are both 9" and 10.5" handguard lengths. If I buy a 10.5" barrel and 10.5 handguard, will the handguard extend past the barrel? I plan on adding just a basic flash hider till I choose a can and wait 9 months for the stamp.
The handguard will extend to the end of the barrel (past the threads). Most people that run cans on weapons with less than 10" barrels get handguards that cover some if not all of teh can as well to extend a rail another few inches.

I have not assembled an AR before, but this thread has given me the assurance that I can do it.

I didn't know how with a barrel nut and how the handguard marries up if a 10.5 handguard will stick out further than a 10.5" barrel without a flash hider already attached.

Thanks y'all!

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I'd actually prefer to get a hand guard that is about 1 inch shorter than the barrel so you can easily remove the can- unless you don't ever plant to take the can off.

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Don't put a rail over a brake, just in case nobody has mentioned that...

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Don't put a rail over a brake, just in case nobody has mentioned that...

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Yes, this is important to remember.

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Don't put a rail over a brake, just in case nobody has mentioned that...

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Don't put a rail over a brake, just in case nobody has mentioned that...

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You can. You'll just need some extra hardware to safely pull it off.

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Don't put a rail over a brake, just in case nobody has mentioned that...

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You can. You'll just need some extra hardware to safely pull it off.

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I'm confused. What does that accomplish/prevent?

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Break under the handguard = new handguard

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Break under the handguard = new handguard

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Wow. How the hell does that happen? Heat and pressure over time?

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Break under the handguard = new handguard

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Wow. How the hell does that happen? Heat and pressure over time?

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Think of Looney Tunes when Bugs sticks a banana down Elmer's barrel.

A compensator directs gas out of ports on either side of it. That gas has enough pressure to split a hand guard when it's installed over the muzzle. It also has enough force to burn/remove fingers like a cylinder in a revolver. The device schmelba posted helps contain the gas

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I'm thinking about picking up a Troy Tomahawk for a new 300blk build. Has anyone on here run one before? I'm wondering if it's any better than the HK A3 stocks

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The blast deflector you see in my photos is made by YHM, and connects to the flash hider the same way my suppressor does.

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I'm thinking about picking up a Troy Tomahawk for a new 300blk build. Has anyone on here run one before? I'm wondering if it's any better than the HK A3 stocks

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I'm thinking about picking up a Troy Tomahawk for a new 300blk build. Has anyone on here run one before? I'm wondering if it's any better than the HK A3 stocks

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Haven't gotten to play with one but that style intrigues me too.

Another option would be a law folder and a LWRC ultra compact.

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