Anybody know the weights of AR upper receivers?


PDA






IMtheNRA
May 3, 2013, 02:11 PM
Looking at building a very, very light carbine, just for fun and need to order an upper receiver. I'm wondering if anyone knows the weights of A2, A1, and flat-top uppers (forward assist versions).

If you enjoyed reading about "Anybody know the weights of AR upper receivers?" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
Walkalong
May 3, 2013, 03:09 PM
I don't know weights, but if you want really light, you want a pencil barrel, or lightweight barrel, and a light forearm. Think carbon fiber.

I have no idea of the weight of my .300 BLK (http://www.thehighroad.org/attachment.php?attachmentid=174610&d=1352692527), but it is very light, even with the scope on it. The lightweight barrel with no front sight, just a low profile gas block, is most of the reason why.

I can weigh it later.

IMtheNRA
May 3, 2013, 03:55 PM
Yep, that's the plan. Pencil barrel (.223) & carbon fiber.

Just don't know how much uppers weigh. I'm trying to shave every ounce of weight that I can.

Hmmm... Are your scope rings mounted backwards?

Walkalong
May 3, 2013, 07:35 PM
No, although the scope is mounted further forward now.

Quentin
May 3, 2013, 07:54 PM
Here's a spreadsheet that should help...

https://spreadsheets.google.com/pub?key=tsU_kAjONKoGGfkDPaQZX1Q&single=true&gid=0&output=html

gotigers
May 3, 2013, 08:01 PM
Forged flat tops are the lightest. Billet is usually heavier.

The DPMS sportical upper is heavier than a milspec upper receiver. Due to its thicker walls.

The forged low pro flat tops are the lightest (other than DPMS).

hunttheevil
May 3, 2013, 08:41 PM
That's a nice, clean looking rifle Walkalong!

Walkalong
May 4, 2013, 08:54 AM
Found this lightweight lower.

http://www.brownells.com/rifle-parts/receiver-amp-action-parts/receivers/lower-receivers/ar15-lightweight-lower-receiver-prod55523.aspx

That's a nice, clean looking rifle Walkalong!
Thanks.

If you enjoyed reading about "Anybody know the weights of AR upper receivers?" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!