Rail Options.

[Wulf202]

If you want to start crunching numbers
https://docs.google.com/spreadsheet/...VE&hl=en#gid=0

For specifically rails
https://spreadsheets.google.com/pub?...DQ&output=html

You'd save about 3oz cutting your barrel down.

[Great-Kazoo]

If you want to start crunching numbers
https://docs.google.com/spreadsheet/...VE&hl=en#gid=0

For specifically rails
https://spreadsheets.google.com/pub?...DQ&output=html

You'd save about 3oz cutting your barrel down.

If that.
The difference between uppers with same acc and shorter bbls is negligible. Went from a RH, 16" .625 bbl to a Stag LH M4 upper for the spouse, While visually it may appear lighter the difference wasn't. Off the top of me head IIRC
Cav arms lower, BM .625 upper 5.3
CAV lower LH stag 5.6ish

[Wulf202]

14.5" m4 at 25 oz
16" m4 at 28.2 oz

You could also change out the upper to one with no ejection port cover and or no forward assist and save 1-3 ounces that way.

You can loose 3 oz going to a JP lightened bolt carrier

So you've lost 9oz and spent $500 dollars

Timk has a carbon 15 for sale that runs right at 5.5lbs ready to go.

[hatidua]

If you want to start crunching numbers
https://docs.google.com/spreadsheet/...VE&hl=en#gid=0

For specifically rails
https://spreadsheets.google.com/pub?...DQ&output=html

You'd save about 3oz cutting your barrel down.

-that's a great resource!

[Wulf202]

Googlefu is strong

Starting to look into a build based off these;

http://aeroprecisionusa.com/shop/ar1...forward-assist

http://www.model1sales.com/index.cfm...ategory_id=375

KAC flip up rear, remove the bayonet lug and the sling mount, maako unlined handguards and a tlr-3

But I won't be going with the JP carrier due to reliability and cost.

[NightCat]

Thanks for the info Fellas!

I do want a shorter profile barrel for more than just the weight savings...however, that was an added plus that now seems to not be so great..

I'll do some more looking around for other area's to cut weight....perhaps I'll just build a completely different upper...or a different rifle at that entirely..

And as far as the rail system weights go...this is mine..
https://troyind.com/products/bravo-11-fde

I'm assuming it falls under TRX Standard...and in 11"...says this fucker weighs 20.04 Oz.... thats 1 1/4 lbs of rail.....

[Joe_K]

http://www.brownells.com/rifle-parts...prod55523.aspx

http://www.bravocompanyusa.com/BCM-K.../bcm-kmr13.htm

http://www.brownells.com/rifle-parts...prod41976.aspx

http://www.missionfirsttactical.com/...tility-Stock_5



Sent from my PRC 117A in my Batmobile disguised as a sedan.

[cofi]

The new bcm keymod rail is 7.7 oz for there 13"

If you want to try out a battlecomp on a 14.5 your welcome to shoot mine
fwiw I can't stand the same thing

[nisils14]

this might help as well, seems a bit outdated now though. I'm reading your 11" bravo is 13oz by itself.

https://spreadsheets.google.com/pub?...DQ&output=html

[NightCat]

I'm Fairly sure my rail is more than 13oz...but I really dont want to dismount it to weigh it haha.

However, here are some weights of other stuff that may be useful to others.
Magpul XT Rail Covers: 15.6g each (47g for 3)
Magpul XTM Rail cover: 6.5g ea (26g for 4 assembled sections)
Magpul RSA: 37g
Magpul AFG2: 73g.
Magpul ACS (Milspec): 407g