[ARCHIVED THREAD] - M4 by DPMS

Posted: 6/23/2002 1:10:22 PM EDT

What do you think about this rifle vs other brand (oly,bush...)

Posted: 6/23/2002 1:38:39 PM EDT

[#1]

Mine looks and works great. While friends AR's were jamming on Wolf ammo mine was plinking away. Get a Hogue grip. Polish the feed ramps and the *center* of the pins that the trigger components pivot on and you're all set. You won't need to do anything to it again, except clean it. And feed it!

Posted: 6/23/2002 1:48:28 PM EDT

[#2]

I saw on this board that it doesn't have a chrome barrel, but on dpms website this is write that the m4 has a chrome-molly battel so ???

Posted: 6/23/2002 3:05:25 PM EDT

[#3]

Chrome-moly is not the same as chrome lined. Teh chrome-lined will hold up better and resist corrosion better.

Posted: 6/23/2002 3:13:24 PM EDT

[#4]

Chrome-moly = Chrome and Molybdenum steel alloy! Usually AISI 4340

Posted: 6/23/2002 3:52:32 PM EDT

[#5]

I have a dpms m4 upper that has never given me a problem.However I dont thinck they make a postban upper in m4,just preban.

Posted: 6/23/2002 5:06:44 PM EDT

[#6]

I have 2 DPMS ARs. One Chrome lined, and one non
Chromed. They are both great rifles. The non chromed one seems to produce a lot more barrel heat???

Posted: 6/25/2002 7:33:01 AM EDT

[#7]

www.ar15.com/forums/topic.html?id=126932

Posted: 6/25/2002 7:54:24 AM EDT

[#8]

Quoted:
I have 2 DPMS ARs. One Chrome lined, and one non
Chromed. They are both great rifles. The non chromed one seems to produce a lot more barrel heat???

Yes, your observation is correct.
There is less friction between a chrome-lined barrel and the bullet. Less friction = less heat. Chrome has a higher lubricity than steel.

[ARCHIVED THREAD] - M4 by DPMS

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[ARCHIVED THREAD] - M4 by DPMS

[ARCHIVED THREAD] - M4 by DPMS