300BO gas tube length question.

[Caveman Jim]

I'm wanting to buy a new 16" upper in 300BO and a few that I'm considering only come with pistol length gas tubes, is this the standard?

Comments & advice greatly appreciated.

Jim Sr.

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[osprey]

Pistol length gas system is the best way to go to reliably cycle subs and supersonic ammo. If you had no intention of using sub ammo through it then a carbine gas system would be fine.

 

[rick benjamin]

Jim
Found Red Barn Armory ad selling Radical Arms barrels.
All three lengths use pistol length gas tubes

 

[Joe13]

It's because the 300BO was designed to optimize the short barreled AR's being built using a round that is optimal in a 20" barrel...

 

[Caveman Jim]

Good stuff guys!!! I'm trying to decide if I want to use the 300BO caliber in two classes, a 16" complete DI upper for small game like deer and SD and in a pistol w 10.5" barrel for a trunk gun but I'm still on the fence with the XTAR XMP556 for its small profile (but still a 223/5.56).... decisions decisions decisions

 

[Caveman Jim]

Just wanting to make sure I get the right barrel to put on the pistol length gas tube on.
Will this work for my rifle build and what buffer weight is needed?
As aways, thanks in advance.

<broken link removed>

 

[Boboclown]

Will this work for my rifle build and what buffer weight is needed?

Carbine without suppressor, H2 with. May vary.

XTAR XMP556

I honestly tried googling this.

 

[Caveman Jim]

Carbine without suppressor, H2 with. May vary.

I honestly tried googling this.

Thanks for the explanation.

EXTAR EXP-556 Lightweight Pistol-The Lightest 5.56 pistol in the world

 

[Boboclown]

Thanks for the explanation.

EXTAR EXP-556 Lightweight Pistol-The Lightest 5.56 pistol in the world

That is a weird 5.56 pistol. I want one.

But I forgot to mention it, that would be the barrel for a pistol length gas tube. And it would work. Is there a reason you want a heavy barrel? Just wondering.

 

[Caveman Jim]

That is a weird 5.56 pistol. I want one.

But I forgot to mention it, that would be the barrel for a pistol length gas tube. And it would work. Is there a reason you want a heavy barrel? Just wondering.

I like the heavy barrels for bench rest shooting & will be hunting from a ground blind.
It will not add to much weight to the rifle & if it does get heavy I'll just ask the kid to carry it for a while...

 

[Caveman Jim]

That is a weird 5.56 pistol. I want one.

I like the small profile & it will fit nicely in a GHB.

 

[KeepnitReel]

I'm in the process of building a 6.5 Grendel for my fathers birthday in march. Has pretty good knock done power and weight for both your needs, also reaches out to a 1000 yards. Are you wanting the BO for reloading purposes or subsonic shooting ?

 

[Caveman Jim]

I'm in the process of building a 6.5 Grendel for my fathers birthday in march. Has pretty good knock done power and weight for both your needs, also reaches out to a 1000 yards. Are you wanting the BO for reloading purposes or subsonic shooting ?

I'm actually exploring and have tons of 223 that have dents on the collars so would be great if I can use them plus the only thing I have to change on a spare 223 upper is the barrel. It's a cheap way for me to use baby steps before I go hog wild and have to buy a bunch of other reloading stuff & a bigger safe...lol
I plan to get back into deer hunting in the future & want to build my hunting rifle.

 

[KeepnitReel]

Makes sense, good luck with your planning

I'm actually exploring and have tons of 223 that have dents on the collars so would be great if I can use them plus the only thing I have to change on a spare 223 upper is the barrel. It's a cheap way for me to use baby steps before I go hog wild and have to buy a bunch of other reloading stuff & a bigger safe...lol
I plan to get back into deer hunting in the future & want to build my hunting rifle.

 

[Caveman Jim]

Makes sense, good luck with your planning

Thanks, it's a work in progress thing for me cause I'm always tinkering.

 

[KeepnitReel]

Thanks, it's a work in progress thing for me cause I'm always tinkering.

Ditto, I can't leave anything alone.

 

[Caveman Jim]

Thanks to all who chimed in with correct, educated and factual advice. I received the last of the parts for my build AR pistol. Now waiting for the 5Dtactical 80% jig and AR armorers punch kit from Brownells.
I'm ready to get giggity with it!!!

 

[KeepnitReel]