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ky hunter
August 31, 2012, 06:01 PM
Has anyone heard of ER Shaw making ar barrels if so are they any good? What make of barrel is best in a 16'' looking to build a m4 with 1-7 twist. Please help me I want to start with stripped lower & upper two sage trigger
and do all the work my self so much fun:)

Creeper
August 31, 2012, 06:21 PM
Shaw makes an exceptional barrel. Krieger, Shilen, Lilja, Hart, PAC-NOR/Noveske and Satern come to mind as a short list of premium match grade barrel makers.
I'm afraid I don't have an interest in researching who does or does not makes a 1:7 barrel... most do, but I know for a fact that Lilja makes only a 1:8, and Krieger will make as fast as a 1:6.5 and as slow as a 1:12. These last two makers are frequently my choice when accuracy is the primary concern.

Cheers,
C

Wyosmith
August 31, 2012, 06:34 PM
I have used many of them.
Never had a bad one.
I have one 16" carbine that shoots about 5/8" inch with good ammo and it has a an ER Shaw barrel.

ky hunter
August 31, 2012, 08:24 PM
Thanks Wyosmith what twist rate?

Wyosmith
August 31, 2012, 08:46 PM
I have used 1-9 and 1-8 both.
My Carbine is a 1-9

FrosSsT
August 31, 2012, 08:48 PM
What make of barrel is best in a 16'' looking to build a m4 with 1-7 twist

It is very hard to beat Noveske - easily one of the best barrel manufacturers out there for the AR platform. Quality costs money in the gun world so they will cost you. Availability is also an issue.

Mobuck
September 1, 2012, 07:46 AM
I'm not so sure that buying a high end barrel cut with the M-4 profile is cost effective. If you want to optimize the accuracy, make it a Hbar profile. Just my opinion but, why is the M-4 even of interest? There are lighter profiles and more accurate, easier holding profiles.

bedlamite
September 1, 2012, 12:24 PM
Choose the twist rate based on what bullets you want to shoot. The heavier 75/77 gr loads will require 1:8 or faster, the light weight 35-40 gr bullets require a slower twist. The military originally specified 1:7 because that was required to stabilize the long tracers.

I have an ER Shaw barrel that shoots Hornady 75gr HPBT into 1/2 MOA.

IMO, the M4 profile is pointless unless you need the cutout for a grenade launcher :rolleyes:

kraigwy
September 3, 2012, 10:44 AM
The military originally specified 1:7 because that was required to stabilize the long tracers.

Plus the 1:7 shoots the lighter 55 grn M193s quite well. It will shoot anything from 50 to 90 grns.

Can't say that about the slower twist barrels.

flynlr
September 3, 2012, 05:58 PM
i have used 2 of these in builds and the are both rock solid barrels .
http://www.dsarms.com/DSA-ZM4--16-Chrome-Lined-17-Twist-M4-Barrel---ZM4001M4PARKCL-A/productinfo/ZM400116M4PARKCL-A/
warning though., if you order, be prepared to wait a long time.
i ordered 2 last march 5 and they did not arrive until June.