Collapsing stock with rifle-length barrel question

[Ron3]

Yea I searched and found some threads about this but nothing in an "FAQ" form to answer basic questions to those new to the idea.

My question:

I can put a 20 inch upper on a carbine lower (with common M4-type stock) and all I need to do is use a heavier buffer like an H2, right? Wrong? Maybe?

Because I'm not using that ridiculous A2 fixed stock..

[TacticalMark]

You would be better off using Vltor A5 set up https://www.rainierarms.com/?page=sh...roduct_id=3317, https://www.rainierarms.com/?page=sh...roduct_id=3276

Yes you could use carbine extension with H2, H3 or the new H6.

[Iraqgunz]

If you must use the carbine tube, get a blue Sprinco spring and an H3 buffer.

[Cold/Bore]

You would be better off using Vltor A5 set up https://www.rainierarms.com/?page=sh...product_id=236, https://www.rainierarms.com/?page=sh...roduct_id=3276

Yes you could use carbine extension with H2, H3 or the new H6.

That receiver you lo linked was not an A5 receiver extention. Do not use an A5 buffer system with a standard carbine receiver extention. You need an A5 receiver extention.

[Trifecta]

Long story short, I built the exact rifle you're looking at, 20in + collapsible. Let me tell you, I was given the same advice and heeded it.

Alpha ops has the entire kit - the stock for $110 and free shipping, just do it and be happy.

[Trifecta]

Long story short, I built the exact rifle you're looking at. 20in + collapsible. Let me tell you. I was given the same advice and heeded it.

Alpha ops has the entire kit - the stock for $110 and free shipping, just do it and be happy.

[markm]

You would be better off using Vltor A5 set up

Yep. That's what the A5 was designed for.

[Exiledviking]

Am I the only one who wishes that Magpul would make the UBR with an A5 length receiver extension?

Sent from my SAMSUNG-SM-N900A using Tapatalk

[markm]

Am I the only one who wishes that Magpul would make the UBR with an A5 length receiver extension?

YES!..

[Ron3]

Thanks, fellas