Basic Question: Does a Rifle Length Gas System Need a Rifle Length Buffer Tube?

[R.A.N.G.E.R]

Or will a carbine length receiver extension and 3oz weight work ok?
Thos is for a 20” barrel that uses rifle length gas tube.

Hope this basic question is ok in this forum.


Thanks

[dmd08]

yes.

Eta: Hope I didnt cause confusion. I meant yes it will work with carbine RE/buffer, not yes it needs a rifle RE. Oops.

[MegademiC]

Carbine tube, buffer, and spring.
Not sure what weight buffer to use.

[MistWolf]

Or will a carbine length receiver extension and 3oz weight work ok?
Thos is for a 20” barrel that uses rifle length gas tube.

Hope this basic question is ok in this forum.


Thanks

You can use a carbine RE assembly with a rifle upper. I'd start with an H2 buffer.

[Circle_10]

The Canadians use such a configuration as their C7A2 service rifle. IIRC it uses an H3 buffer or equivalent.

Someone will probably recommend the Vltor A5 kit as well. I can't recommend it from any first-hand experience, but I seem to recall that it was designed with a 20" barreled rifle in mind.

[mig1nc]

The Canadians use such a configuration as their C7A2 service rifle. IIRC it uses an H3 buffer or equivalent.

Someone will probably recommend the Vltor A5 kit as well. I can't recommend it from any first-hand experience, but I seem to recall that it was designed with a 20" barreled rifle in mind.

The A5 buffer system gets it's name from being part of Vltor's proposal for an M16A5 upgrade program.

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[Toyoland66]

The Canadians use such a configuration as their C7A2 service rifle. IIRC it uses an H3 buffer or equivalent.

Someone will probably recommend the Vltor A5 kit as well. I can't recommend it from any first-hand experience, but I seem to recall that it was designed with a 20" barreled rifle in mind.

The A5 buffer is close to the same length as a rifle buffer minus the fixed spacer.

[Iraqgunz]

This has come up several times. I have built a few rifles for guys locally using correctly gassed 20" barrels, Sprinco blue springs and an H3 buffer. They ran perfectly fine.

[sgtrock82]

This has come up several times. I have built a few rifles for guys locally using correctly gassed 20" barrels, Sprinco green springs and an H3 buffer. They ran perfectly fine.

Seeking clarification on this, are you speaking of using the green spring in a carbine RE. The green spring is rifle length, does it fit or did you mean the blue spring?



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[MistWolf]

The A5 buffer is close to the same length as a rifle buffer minus the fixed spacer.

That portion of the rifle buffer is about a half inch longer than the A5 buffer.