Carbine stock with rifle length gas sys

[Outlaw45]

I'm having a brain fart moment cause I should know this but... If I have a 20" barreled upper with rifle length gas system and I put it on a carbine stocked lower (likely a UBR) do I need a anything different for buffer or spring? Probably a heavier buffer right?

It's will be 223.

 

[2ac]

I use a H2 with my 18" rifle length and SOPMOD.

 

[USGILT]

I use a H2 with my 18" rifle length and SOPMOD.

As 2ac already stated: The ideal carbine buffer when using a 20" barrel and rifle-length gas system is an H2. Personally, it works but the weapon feels really weird to me anyway. The only adjustable stock that feels acceptable to me with a fence-post upper is the UBR, and even that still feels unbalanced once anything else is attached to the gun forward of the receiver.

 

[-Nick-]

You might even need an H3. I wouldn't hurt to consider swapping out the gas block with an adjustable as well. With that set-up you might be better off considering a PRS stock which would give you a rifle length buffer tube and it's less than the UBR.

 

[Spiff034]

I've used both an H and an H2 for that setup. I settled on the H. I even used a plain carbine buffer for some really wimpy ammo.

 

[Outlaw45]

I guess its between a PRS and an UBR.

 

[Outlaw45]

It will be for a precision build hitting steel or paper not really a hunting gun. When shooting I would have the UBR extended all the way. I just thought it would be nice to collapse for transport.

 

[benchmstr]

ive been using the spikes st-t2 buffer for all my builds lately...heavy and smooth

 

[Cobracutter]

Take a hard look at M14, M1A, SOCOM Series Modstock - Vltor Weapons Systems. One of the softest shooting buffer systems.

If you are serious about precision, get a PRS or a SOMOD with S.A.P.R. (SOPMOD).

Its going to be hard to get good repeatable cheek weld with a std stock and tube. Don't expect to change the possition of the stock once its set up.

 

[BERTMAN77MK2]

Have used the UBR and the VLTOR EMOD, with the aforementioned ST2

 

[HairyDemon]

Interested in this thread, Thinking of doing the same thing. I am going to swap my lower with a carbine spring and ST-2 buffer and shoot my 18in rifle upper on it today and I will post results.

 

[Outlaw45]

Why would the UBR not be a good precision stock? Wouldn't it be the same as the old A2 stock but with the ability to collapse? The PRS only adds comb height adjustment.