Question on ZM4 Uppers - AR15.Com Archive

Question on ZM4 Uppers

PatriotAr15 [Team Member]

12/8/2009 12:47:12 AM

Just have a few quick questions.

Are your rifle uppers Parkerized under the front sight base?

Is there an option to have the barrel chrome lined? Can I also get a 1:7 barrel twist?

Also curious,... what type of steel do you use in your barrels? Is it 4150?

Sorry for the barrage of questions.

I already own one of your STG58s, and I love it

Mattyvac [Member]

12/8/2009 5:56:12 PM

As per their website description of the nitride ZM4:

- 16 Inch 5.56mm NATO Nitride Treated Chrome Moly 1:9 Twist ZM-4 Barrel

http://www.dsarms.com/DSA-ZM4-Forged-7075T6-A3-AR15-Upper-Receiver––-DSZM4CBU/productinfo/DSZM4CBU/

I believe that means the barrel is chrome lined?

EDIT: I'm retarded, that doesn't mean that.

DisplayName [Member]

12/8/2009 6:59:03 PM

LOL

DSZM4 [Member]

12/22/2009 12:49:30 PM

http://www.dsarms.com/DSA-ZM4-A3-Upper-Receiver-W_16-BarrelM4-HG-A2-Flash-Hider/productinfo/DSZM4CBUPARKCL/

Here is a link to our site for 1:7 chromelined M4 uppers

Thanks