.300 Questions

[Danny46]

I have a Pistol that I put a Red X Arms 10" upper on and I just wrapped my buffer tube with para cord and sealed it with a cane cap. It looks decent enough.

So you just used the standard 6 position (or whatever) tube? Stays legal? Will probably go that route. I see the padded tubes that run like 100 bucks, I just dont see the benefit over a normal tube

[LANTIRN]

I have a Pistol that I put a Red X Arms 10" upper on and I just wrapped my buffer tube with para cord and sealed it with a cane cap. It looks decent enough.

There is also foam pieces some people use.

The reason I suggest the KAK buffer tube and Sig brace is the KAK is build for the Sig brace and is actually longer with spacers provided. I should be able to get the same length of pull from it as I am my AR15 I have.


This is the entire kit but you can get just the buffer tube and spacers, or whatever combo you want. They have several levels of kits to choose from.

http://www.kakindustry.com/ar-15-parts/lower-parts/buffer-tubes-and-parts/pistol-buffer-tubes/sig-super-package-black-plain

[lilvega]

Wow, that is awesome.

What are the best options if I just want the buffer tube without the Sig brace and all that? I dont mind the sig brace but dont care to pay for it since its almost as much as the tax stamp, but I would like to have this rifle up and running asap.

Also how is the reliability with hypersonic rounds? (no suppressor)

Danny,

I have a sig brace and pistol tube if you want it. I will sell it for $80. The brace itself is like 130 plus the tube. I used it twice while waiting on my form 1.

[lilvega]

I ran the sig brace just barely on the tube. Enough to be stable and it was just perfect to shoulder fire. Not too close for me at all.

[John -- '02 HAWK]

So you just used the standard 6 position (or whatever) tube? Stays legal?

From what I remember having a x position buffer tube is considered intent by the ATF, and classifies the weapon as a rifle (or sbr if it has a short barrel)

To help stop any intent thoughts, a lot of the pistol buffer tubes are larger and/or missing the key way so that a stock will not fit on them.

Price is supposedly higher due to supply and demand

[KBScobravert]

I have generic cheap pistol buffer tube setups from Model 1 that I use while waiting for stamps.

[Danny46]

Danny,

I have a sig brace and pistol tube if you want it. I will sell it for $80. The brace itself is like 130 plus the tube. I used it twice while waiting on my form 1.

Is your location accurate? I think I'll take you up on this, I'm in west fort worth, I'll actually be up at Cabelas tomorrow, maybe I'll mosey on up afterward if you're free?


@John -- '02 HAWK Good to know! thank you sir lol That would definitely suck to get hit for something like that.

[lilvega]

Is your location accurate? I think I'll take you up on this, I'm in west fort worth, I'll actually be up at Cabelas tomorrow, maybe I'll mosey on up afterward if you're free?


@John -- '02 HAWK Good to know! thank you sir lol That would definitely suck to get hit for something like that.

Yes. I am in Denton. 15 mins north of Cabelas.
I will be at work until about 4pm. I will PM you my number.

[lilvega]

I will even throw in a buffer tube nut and sling mount if you need them.

[Danny46]

I will even throw in a buffer tube nut and sling mount if you need them.

I could use both, thanks man! Will shoot you a text here in a second

[01yz2nv]

^^^^Did you end up picking this up? Id be interested if not.

[Danny46]

^^^^Did you end up picking this up? Id be interested if not.

Yes sir I picked it up the next day

[lilvega]

Post pics when you get it together!

[CJ]

First thing before you buy a .300blk. Do you reload?

If there answer is no, don't buy a .300blk.


1) The shortest barrel length possible with a standard pistol length gas system is 6". I have a 6" barrel on mine, it was a 9.5". Barrel length is irrelevant if you're shooting suppressed and it can even hurt accuracy the longer you make it. Remember, most .30 cal suppressors are 9" long, so 9+9.5"=18.5" barrel. The shorter you go the better in nearly every area. It's more accurate, smaller, and lighter.

2) If you drop below a 9.5" barrel you need to go to a 1:7 twist. At 9.5" and longer 1:8 is fine.

3) Brands don't matter because 90% of all manufacturers use the same blanks. Just make sure they know how to machine it. Pistol length gas systems are non-standard. Meaning there is no predefined exact specifications for where and how to cut the gas port, and the shelf. I ran into this problem when trying to do a piston setup on my M16. For DI it really doesn't matter.

4) get a pistol length gas system only.

5) I prefer light profile barrels, especially if you're shooting it as subsonic only. There is substantially less harmonics subsonic, especially if you have a titanium suppressor. There is an opportunity to save a lot of weight.

[LANTIRN]

First thing before you buy a .300blk. Do you reload?

If there answer is no, don't buy a .300blk.


1) The shortest barrel length possible with a standard pistol length gas system is 6". I have a 6" barrel on mine, it was a 9.5". Barrel length is irrelevant if you're shooting suppressed and it can even hurt accuracy the longer you make it. Remember, most .30 cal suppressors are 9" long, so 9+9.5"=18.5" barrel. The shorter you go the better in nearly every area. It's more accurate, smaller, and lighter.

2) If you drop below a 9.5" barrel you need to go to a 1:7 twist. At 9.5" and longer 1:8 is fine.

3) Brands don't matter because 90% of all manufacturers use the same blanks. Just make sure they know how to machine it. Pistol length gas systems are non-standard. Meaning there is no predefined exact specifications for where and how to cut the gas port, and the shelf. I ran into this problem when trying to do a piston setup on my M16. For DI it really doesn't matter.

4) get a pistol length gas system only.

5) I prefer light profile barrels, especially if you're shooting it as subsonic only. There is substantially less harmonics subsonic, especially if you have a titanium suppressor. There is an opportunity to save a lot of weight.

Good info. Interesting about the gas ports not being standardized; good to know but I am planning on going DI so I wasn't concerned about that so much. However, I am interested in the shorter barrel length since eventually I want to get a suppressor for it. At 6", suppressed and non suppressed, do you get much muzzle flash? Also what about the longer barrel and suppressor combo make it potentially less accurate?