User Panel
User Panel
User Panel
|
Posted: 2/4/2008 11:21:47 AM EDT
[#1]
My lightest so far, is an A1 upper with M4 Gov profile barrel. Weighs in at 5 lb 15 oz empty.
My next lightest is a flat top M4 profiled barrel with an EOTech and Troy BUIS. 6lb 12oz My lightest AKM type carbine weighs in at 6 lb 7oz empty. Each is quite handy, and I don't know how much lighter I could go and still count on them working when needed. |
|
|
|
Posted: 2/4/2008 2:52:46 PM EDT
[#2]
www.ar15.com/forums/topic.html?b=2&f=61&t=157395 in the pic where you can see through it the buffer tube has its own areacould yo cut out everything under it back to the slot for the sling? as far as not making a difference weight wise drillin out the center of pins and the bolt release?? |
|
|
|
|
Posted: 2/4/2008 7:12:50 PM EDT
[#3]
I tend to get a little (a lot?) carried away! You can remove a lot of plastic and still not match removing a little steel. It might be worth a try as long as you SECURELY epoxy a butt pad on to try and make up for the structural loss. PursuitSS |
||
|
|
|
Posted: 2/4/2008 7:43:18 PM EDT
[#4]
i wasnt actually recommending it... after all a truck gun would need some stabilty.. if i had all kinds of extra cash i would consider tryin it for shits and giggles then wrap the remaining area where the buffer tube would be with 550 cord.
|
|
|
|
Posted: 2/6/2008 8:47:08 AM EDT
[#5]
I guess Bush was correct in making that Carbon line of guns
they have it just above 4lbs .. www.bushmaster |
|
|
|
Posted: 2/6/2008 8:58:56 AM EDT
[#6]
Man of they ideas are full of fail.
Carbon fiber does not belong in an upper, and only with proper reinforcement in the lower. A MUR is heavier than a regular. Steve at ADCO sells a plug that wil fill in the forward assist so you can take the steel parts out- but Baer upper is better. The barrel is the easiest place to save weight. The lower weighs about 8 oz. You could probably get one more off with a good machinist. |
|
|
|
Posted: 2/6/2008 10:17:20 AM EDT
[#7]
AGREED!!! The current "carbon fiber" uppers & lowers are nothing more than a CHEAP PLASTIC! I do have a rifle built out of this crap but it's a "toy", nothing more. This is not to say that someone couldn't manufacture a great receiver out of carbon fiber but it would have to be real long strand carbon fiber mat. Plus the cost would be outrageous. PursuitSS |
|
|
|
|
Posted: 3/2/2008 5:12:37 PM EDT
[#8]
Just incase, this thread has a follow-on thread by PersuitSS here.
|
|
|
|
Posted: 3/2/2008 8:09:42 PM EDT
[#9]
So should I scrap my plans to cross-drill the barrel in order to lose a few ounces?  I still need to get a scale to weigh my lightweight setup. I am sure it won't be a record, but it is built with off-the-shelf, easy-to-find parts. |
|
|
|
|
Posted: 3/3/2008 11:29:01 AM EDT
[#10]
I would be looking at a copy of the Colt 653/Air Force GUU-5/P
|
|
|
|
Posted: 3/3/2008 11:52:44 AM EDT
[#11]
IIRC, I got down to 5 lb. 2 oz empty weight.
Bushy Superlight Barrel with a standard FSB and A1 flash hideer (now you could use CMMG's 14.7" pencil carbine barrel with a shaved FSB and fixed A1 flash hider to shave off 5 or 6 more ounces) Les Baer Ultimate flat-top upper without forward assist (7 oz) Clark Custom Guns carbon fiber free float tube with Al barrrel nut cut to carbine length (4 ounces, including barrel nut) DPMS chromed slick-side bolt carrier (could have used an open back Colt to save a little more weight without compromising reliability too much) Standard bolt and buffer Cav Arms Mk II lower Cav Arms fixed rear BUIS (the lightest available when I did my build). If you shave the FSB or use a low profile gas block, you need to add a front BUIS. I suppose you could ditch iron sights altogether and rely on the 2.3 oz OKO 4W red dot or the 3.7 oz. Aimpoint T1 . . . |
|
|
|
Posted: 3/3/2008 11:53:42 AM EDT
[#12]
 That's what I'm takling about--light weight, simple, practical . . .ETA - Now you've got me thinking about my next build. 
|
|
|
|
|
Posted: 3/7/2008 3:40:31 PM EDT
[#13]
That's a sexy little beast! I have a thing for A1 uppers for some reason; I have an A3 on my "tacticool'd" M4gery but I really want to do something like that with my CavAid lower. Thinking A1 upper with 14.5 perma-Phantom pencil barrel. |
|
|
|
|
Posted: 3/7/2008 4:34:23 PM EDT
[#14]
I agree 100%, here is my modern parts equivalent. 
|
|
|
|
|
Posted: 3/7/2008 5:24:27 PM EDT
[#15]
Just finished my 733 replica. It weighs in at 5 lbs 14.8 oz less mag:
|
|
|
|
Posted: 3/7/2008 5:26:19 PM EDT
[#16]
Colt 11.5" lightweight barrel.
 
|
|
|
|
Posted: 3/7/2008 5:56:52 PM EDT
[#17]
You dirty rotten rat bastards!
First, I invest a bundle building a tacticool M4gery. Then, I put together a KISS carbine. Just today, I swapped for a retro AR. Now, you have me thinking about building a featherweight AR next. BRD is an expensive, never-ending sickness . . . and I blame all y'all for it! What we need is a class-action suit to help us strickin with this awful disease to fund our ailment! |
|
|
|
Posted: 3/7/2008 7:19:28 PM EDT
[#19]
I just scored a Fulton slick-side upper on the EE. I'll be going with the CMMG 14.7" pencil barrel, the Young Mfg slick-side "SP1" BCG and an NDS16A1 lower with an Essential Arms repro of the 2 position stock. God damn BRD - I'm having a relapse.
|
||
|
|
|
Posted: 3/7/2008 8:15:41 PM EDT
[#20]
 5lb 1.2oz |
|
|
|
Posted: 3/7/2008 8:26:23 PM EDT
[#21]
I never weighed it, but this was pretty light:
|
|
|
|
Posted: 3/7/2008 8:34:21 PM EDT
[#22]
The MUR is not particularly light. It isn't any lighter than a regular flattop upper; I'd be willing to bet that the LaRue billet upper is lighter. |
|
|
|
|
Posted: 3/8/2008 5:20:21 AM EDT
[#23]
Right around 6lbs.
|
|
|
|
Posted: 3/8/2008 5:52:08 AM EDT
[#24]
It doesn't get any lighter in an aluminum receiver than Rock River's 9mm flat top upper (cut for a gas tube). NOW, if only Rock River would ship the receivers I have on order so that I can machine them for a gas tube! PursuitSS |
||
|
|
|
Posted: 3/8/2008 10:16:37 AM EDT
[#25]
Have you considered machining the brass deflector hump off of the Les Baer "Ultimate Flat-Top" uppers with no forward assists? I don't know if the operation would be easier or harder than cutting 9mm uppers for a gas tube, but it might be worth considering... |
|
|
|
|
Posted: 3/8/2008 10:46:07 AM EDT
[#26]
Aluminum doesn't weigh enough for that to be cost effective. |
|
|
|
|
Posted: 3/8/2008 12:16:47 PM EDT
[#27]
Basically, been there, done that! This is an old Colt flat top that I milled the brass deflector off of and the forward assist. I then TIG'ed the forward assist hole closed and Krylon'ed it. NEVER AGAIN!!! WWWWWAAAAAYYYYY too much work.  PursuitSS |
||
|
|
|
Posted: 3/8/2008 1:26:36 PM EDT
[#28]
Nice. for the record, I appreciate all that went into that. |
|
|
|
|
Posted: 3/8/2008 7:00:49 PM EDT
[#29]
I agree--I just used the Les Baer upper and called it good.
|
|
|
|
Posted: 3/9/2008 7:46:11 AM EDT
[#30]
For the hardcore:
http://www.brownells.com/aspx/NS/Store/ProductDetail.aspx?p=25695 "Titanium bolt carrier weighs 40% less than standard steel carrier for faster, more efficient cycling and quicker follow up shots. Tough, high-lubricity Ionbond DiamondBlack coating is highly resistant to wear, with an exceptionally low friction coefficient that further aids cycling speed. Finish also resists fouling and makes cleaning easier. Precision machined from aircraft-grade 6AL-4V titanium for a match-grade fit that ensures precise alignment with upper receiver for a better gas seal and more consistent bolt lockup. Requires substantially less gas pressure than standard bolt, so an adjustable gas block is recommended. Includes pre-installed gas key." |
|
|
|
Posted: 4/22/2008 12:43:39 PM EDT
[#31]
The lightweight build referenced earlier is mine. I still have all of it, but I had to replace the upper receiver when the barrel threads melted on me. Melted threads thread |
||
|
|
|
Posted: 4/22/2008 1:39:02 PM EDT
[#32]
There was a reference in your thread by another member as to "This is what real carbon fiber looks like". The pictures are now "blown", do you remember if they were pics of an AR-15 receiver made out of REAL carbon fiber???? He indicated the items were "in testing". PursuitSS |
|
|
|
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
