Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel

Log In

A valid email is required.
Password is required.
Site Notices
Basic
  • Joined Jan 2008
  • Posts 1
  • Location USA TX, USA
Offline Neutral Feedback
Basic
  • Joined Jan 2008
  • Posts 1
  • Location USA TX, USA
Offline Neutral Feedback
Posted: 1/4/2008 3:03:47 PM EST
After lurking for awhile and checking the various forums, I notice a lack of substantive discussion about carbon fiber receivers (upper or lower). I am in the planning stages of my first ground-up build and am curious.

What is the thinking on these items in terms of durability, reliability, accuracy, weight savings, etc. Are they simply a new "gizmo" or is there some merit to their existence?
Basic
  • Joined May 2006
  • Posts 266
  • Location USA MO, USA
Offline Positive Feedback
Basic
  • Joined May 2006
  • Posts 266
  • Location USA MO, USA
Offline Positive Feedback
Posted: 1/4/2008 5:01:43 PM EST
I have a set of the.....(cough, ahem, cough) Hesse receivers. SO FAR they haven't broke! That being said..............................................they will.

There is NOTHING lighter, also in AR-15 receivers, there is nothing WEAKER!

The problem is they use chopped carbon fiber, it's basically a fragile plastic. If some one were to manufacture a carbon fiber long strand mat fiber receiver it would be damn near indestructible, it would also be outrageously expensive.

They are nice for a range queen toy, not something to count on when it all goes wrong!

PursuitSS
Basic
  • Joined Sep 2007
  • Posts 59
  • Location USA USA
Offline Positive Feedback
Basic
  • Joined Sep 2007
  • Posts 59
  • Location USA USA
Offline Positive Feedback
Posted: 1/4/2008 5:32:24 PM EST
Be careful. I've seen the Bushmaster "Carbon 15" in person, and it's not the same "carbon fiber" that you'll seen in bicycle frames, helmets, automobile hoods, and free floating tubes. It's just a fancy name for their type of polymer.

With that said, I don't see the point, unless you're limp-wristed and building an AR pistol.
Basic
  • Joined Jan 2008
  • Posts 2
  • Location USA TX, USA
Offline Neutral Feedback
Basic
  • Joined Jan 2008
  • Posts 2
  • Location USA TX, USA
Offline Neutral Feedback
Posted: 1/4/2008 6:01:01 PM EST
OK... Since reliability is BIG on my list of reliable traits in a weapon, I should probably stay away from carbon fiber receivers, correct?

However, I notice with interest that cav arms makes a polymer lower.... what thoughts on that and do any other makers offer a similar item?
Basic
  • Joined Aug 2004
  • Posts 1136
  • Location USA TX, USA
Offline Positive Feedback
Basic
  • Joined Aug 2004
  • Posts 1136
  • Location USA TX, USA
Offline Positive Feedback
Posted: 1/4/2008 6:11:08 PM EST
Go with metal lowers
Darwin's Little Helper. كافž
Avatar
Platinum
  • Joined Apr 2004
  • Posts 4943
  • Location USA TX, USA
Offline Positive Feedback
Platinum
  • Joined Apr 2004
  • Posts 4943
  • Location USA TX, USA
Offline Positive Feedback
Posted: 1/4/2008 7:29:25 PM EST

Originally Posted By trdill_34:
However, I notice with interest that cav arms makes a polymer lower.... what thoughts on that and do any other makers offer a similar item?


CavArms lowers are made from the same type of material as the Glock frame. The main complaint on ARFcom is that they have a fixed A1 length stock so they're not so readily adaptable to gear whoring or having crap magnets tied to them to be dragged through the inner bowels of the Equipment Exchange. They're made to shoot. They're simple, light, and durable. CavArms has a pix where they had parked a 3/4 ton truck with a lower under each wheel. The truck was pulled forward, an upper was placed on each lower, and all 4 fired.

I only have 5 of them and a token aluminum lowered AR just to say I have one. When I get the AK herd thinned out some more, may get another CavArms lowered AR for the empty slots. As far as non metal lowers, you've got the CavArms polymer, Bushmaster's Carbon 15, and the Hexxe lower. To be fair, I've not seen a report of a Hesse lower failing. You can probably guess that I'm going to recommend the CavArms lower.

wganz
צבאות
<justinwb> your not, you spelled genious wrong.
كافر
Member: ARFCOM, NRA, GOA, SAF, WSRPA
Avatar
Platinum
  • Joined Oct 2004
  • Posts 3450
  • Location USA WA, USA
Offline Positive Feedback
Platinum
  • Joined Oct 2004
  • Posts 3450
  • Location USA WA, USA
Offline Positive Feedback
Posted: 1/4/2008 7:34:05 PM EST
Forged alloy uppers for me. If you want a lightweight lower, go with Cav. Arms.--they've been around long enough and in large enough quantity to prove themselves to my satisfaction. FWIW, I've never had any problems with mine. Fore serious use, I'd pick a forges alloy upper and lower, but YMMV.
...the People have abdicated our duties; for the People who once upon a time handed out military command, high civil office, legions - everything, now restrains itself and anxiously hopes for just two things: BREAD AND CIRCUSES
Basic
  • Joined Aug 2006
  • Posts 29
  • Location USA GA, USA
Offline Positive Feedback
Basic
  • Joined Aug 2006
  • Posts 29
  • Location USA GA, USA
Offline Positive Feedback
Posted: 1/5/2008 5:21:00 AM EST
I own a bushmaster carbon 15 and like it. The only issue I have
with mine after 2000 rounds through it is the barrel seems to get hot
quicker than the aluminum receivers ive shot. But its way lighter than
any of my freinds guns.
Member
Avatar
Bronze
  • Joined May 2002
  • Posts 14824
  • Location USA TX, USA
Offline Positive Feedback
Bronze
  • Joined May 2002
  • Posts 14824
  • Location USA TX, USA
Offline Positive Feedback
Posted: 1/5/2008 10:49:07 AM EST
AR aluminum receivers are incredibly light. The weight saved by going carbon fiber is minimal. You save the most weight in the barrel, rail system, and stock choices. Your accessories can save as much weight. A heavy or light VFG, light, and optic set up can add or drop up to a pound in weight depending on choices.
Top