[Awake777]

Will this buffer work?

http://www.spikestactical.com/z/ind...ducts_id=201&zenid=b6mi19ch3o6fn5s298tm3o2934

I had previously read that a carbine buffer should be used, and not a heavy buffer.

 

[owenslee]

No...not reliably.


In increasing weight you have the:

Std Carbine buffer

H Buffer

H2 Buffer

Spikes heavy buffer.

Bottom line is the Spikes buffer is much too heavy.

I started with an H buffer / SSS spring and using 90g factory loads I was short stroking with my Xtreme until I replaced it with a standard carbine buffer and standard carbine spring.

Don't buy it...

Kerry

 

[marinesg1012]

I dont have an xtreme yet but I can tell you any of the upper Harrison or Tim build you wont need anything more then the carbine wieght buffer.

 

[Awake777]

ok, thanks.

 

[BRODERICK]

I run a rifle buffer and uncut sss spring in a full length receiver extension/fixed stock.

Works wonderful.

 

[Awake777]

I run a rifle buffer and uncut sss spring in a full length receiver extension/fixed stock.

Works wonderful.

Ok, more dumb questions from me.

What is the difference between a carbine buffer and rifle buffer? That the rifle buffer is longer?

What does having an A2 stock have to do w/ having a rifle buffer, if anything?

Is it that you can't run a rifle buffer with a collapsible stock?

 

[marinesg1012]

a rifle buffer is longer and heavier then a carbine buffer.

 

[Awake777]

a rifle buffer is longer and heavier then a carbine buffer.

Can you run a carbine buffer in a rifle buffer tube?

 

[marinesg1012]

To be honest I dont know, I would guess you could but you may have timing issues....

 

[Awake777]

So, back to basics, a rifle buffer is used for non-carbine gas setups. And these setups are the AR-15s, usually, with the longer barrels, like 20".

Is this correct?

 

[Awake777]

So, back to basics, a rifle buffer is used for non-carbine gas setups. And these setups are the AR-15s, usually, with the longer barrels, like 20".

Is this correct?

http://www.thehighroad.org/showthread.php?t=173701

This says that buffer length only has to do w/ the stock, and not the upper. Correct?

 

[Clint]

Mike,

When getting your lower together for the Xtreme you should start with standard buffers and springs,
whether you choose a rifle or CAR stock.

The rifle buffer tube is long and has a long, heavy buffer with a long, low rate spring.

The CAR buffer tube is shorter and has a shorter, lighter buffer with a shorter, higher rate spring.

I have found the standard CAR stock to allow excessive cycling speed vs. the standard rifle stock, using the same upper, a 20" HBAR 556. Adding the SSS spring to the CAR stock reduced the speed to similar levels as the rifle stock.

You can pin any upper to any lower.

Whether you need more or less resistance depends on how the upper is setup.
Gas port location and size are the major factors.

The Xtremes are being setup to operate properly with the standard CAR buffer and spring,
once properly broken in.

 

[Awake777]

Thanks Clint and others who have chimed in.