308 mid gas w/ carbine buffer

[Swankysteve]

Hello everyone. I'm new to the forurm and new to firearms as well, but the big bit me.  So here's my dilemma. Want build 308 ar10 with 18" barrel mid length gas system. i live in California and need to make it legal. i really like the Thordsen frs15 stock. It isn't compatible with rifle length gas tubes. So will mid length gas 18" work with carbine gas buffer? Like i said im new so if my question sounds foolish i apologize ahead of time

[unforgiven]

Welcome from Indiana brother.

[jtallen83]

Welcome from Iowa, via Pensacola!

I think you are mixing tubes, gas tubes are independent from buffer tubes. A mid length gas tube would have no direct interaction with a carbine buffer. tube, example- I have a carbine buffer tube on a rifle with a rifle length gas system.

[Swankysteve]

1 hour ago, Swankysteve said:

Hello everyone. I'm new to the forurm and new to firearms as well, but the big bit me.  So here's my dilemma. Want build 308 ar10 with 18" barrel mid length gas system. i live in California and need to make it legal. i really like the Thordsen frs15 stock. It isn't compatible with rifle length gas tubes. So will mid length gas 18" work with carbine gas buffer? Like i said im new so if my question sounds foolish i apologize ahead of time

Hi @unforgiven & @jtallen83 from Califonia. @jtallen83 you answered my question. Thank you sir. i will run mid length gas system carbine buffer tube. i wanted to know is they would work together. awesome thank you guys

[bubbas4570]

Why not run a rifle length gas system to mitigate some recoil/gas impulse from the 308 platform?

Not making negative comments, just asking.  My 16" 308AR works great with a rifle length gas system.

[bubbas4570]

Oh, and BTW, then you have a reason to get the longer hand guard tubes.........

[survivalshop]

  As by jtallen83 , the stock type or manufacturer has nothing to do with Gas system length . The Buffer & Buffer Spring do . 

 As also said the 18" will be a little tamer with a rifle length Gas system . The 308 cartridge has a lot of power & the shorter the Gas system , the more you feel . I also have a 16" 308AR with a rifle length gas system .

[Swankysteve]

Thank you @bubbas4570 & @survivalshop. I appreciate it. I wasn't sure if that was possible. Here is what i'm looking at so i can loose the bullet button and avoid the whole assault rifle registration, and use the rifle the way it was intended to be used. the whole not compatible with rifle length recoil system was like a curve ball. 

[Swankysteve]

If i can go 20" i would much rather do that i was worried it wouldn't work

[bubbas4570]

You can go to whatever barrel length you want (ie. 20") but that extra length adds unnecessary weight with the 308AR platform.

Too bad the FRS-15 doesn't allow the rifle length buffer tube.

 

And for what it's worth, you still will have the rifle registered anyways.......they know.

[survivalshop]

 As long as you use a 308 Buffer system in the Carbine Receiver extension ( Buffer tube ) you can use any size Barrel you want . You need to find out what length the Receiver extension is , the Armalite & DPMS types use different length Tubes & will require one or the other Buffer & Spring for their perspective systems . 
DPMS type system uses a std AR 15 Receiver Extension ,Rifle or Carbine systems , Armalite systems are a different length & require their 308 components . it may sound confusing , but its not , just use the system that matches the Receiver Extension length or what is designated by the manufacturer .

 Not sure what difference that Stock system will make with Commifonia laws , good luck on that one .

[Swankysteve]

Thank you everyone!