Flat top M4

The discussion of combat rifles and Shotguns

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norfdet
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Post by norfdet » Mon Mar 06, 2006 10:16 pm

why does an M4 have a step in the barrel but a full size rifle does not?

scottc
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You ask questions that...

Post by scottc » Mon Mar 06, 2006 10:39 pm

norfdet wrote:why does an M4 have a step in the barrel but a full size rifle does not?
When the messiah comes he will tell us all we need to know. The reason is the placement on the frame of the M203 grenade launcher. I just know the full size 20" barrel is good to go, but in order to sling one on the 16" barrel you have to have the step. I wish I could be more specific.

Scott.

norfdet
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Post by norfdet » Tue Mar 07, 2006 4:11 pm

ok what is the difference between 5.56 and .223?

scottc
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223 vs 5.56

Post by scottc » Tue Mar 07, 2006 4:14 pm

norfdet wrote:ok what is the difference between 5.56 and .223?
You want the short version or the long version?

norfdet
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Post by norfdet » Tue Mar 07, 2006 4:17 pm

My son is sleeping, I have nothing else to do......

scottc
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The Short Answer

Post by scottc » Tue Mar 07, 2006 4:20 pm

There is a very and I mean very slight difference in the throat and neck of the brass. But the biggest difference is the thickness in the brass. The 5.56 brass is a tad thicker thus causing higher pressures in the chamber. The rule of thumb if your rifle is marked 5.56 you can shoot either round since the chambers on the 5.56 rifles are a little rommier. If the rifle is marked 223 you should only shoot 223.


Now for the long version and I mean long version click here:
http://www.ammo-oracle.com/

norfdet
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Post by norfdet » Fri Mar 10, 2006 2:14 pm

Scott,

the Olympic Arms M4's that I looked at last night, did they have a chromed lined barrel or not?

scottc
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Oly M4

Post by scottc » Fri Mar 10, 2006 11:02 pm

norfdet wrote:Scott,

the Olympic Arms M4's that I looked at last night, did they have a chromed lined barrel or not?
Nope, Oly does not use Chromed Lined barrels. Which is fine you only need that is you are shooting full auto. Also I will be getting some more M4A3s in a couple of weeks. They will be shipping in the begining of the next week.

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Post by norfdet » Sat Mar 11, 2006 8:03 am

Stupid question time;

If you do not have a chromed line barrel is there a certain break-in peroid that you have to do when you first shoot the rifle? I reference the suggested Kel-Tec SU16 break-in, which is to shoot the rifle (a few rounds) and clean the barrel, then shoot it some more repeating the process a certain number of times.

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Break it in...

Post by scottc » Sat Mar 11, 2006 9:32 am

norfdet wrote:Stupid question time;

If you do not have a chromed line barrel is there a certain break-in peroid that you have to do when you first shoot the rifle? I reference the suggested Kel-Tec SU16 break-in, which is to shoot the rifle (a few rounds) and clean the barrel, then shoot it some more repeating the process a certain number of times.
Sure this is how I did it. Shoot a 100 rounds, take a bore snake and run it, and clean the chamber out and shoot on till you are sore in your trigger finger.

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Post by norfdet » Sat Mar 11, 2006 9:40 am

Saw you log onto AOL but then you disappeared. Are Colt's chromed lined becasue I sure as hell did not do this when I shot mine.

scottc
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Yes

Post by scottc » Sat Mar 11, 2006 7:49 pm

norfdet wrote:Saw you log onto AOL but then you disappeared. Are Colt's chromed lined becasue I sure as hell did not do this when I shot mine.
Colts are chromed lined.

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Post by norfdet » Thu Apr 06, 2006 5:48 pm

Thanks to Scott and Marie at the Armory. Here is the finished product (drool....splitter :A );

Image

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Post by Splitter » Sat Apr 08, 2006 10:30 pm

Sweet..... DO NOT come over here with that... if you do that and Helen see's it, I'm done for...... remember the last time you visited? I ended risking my marriage for a CPO P229!!
Support Israel!

SigSauer P239 .40SW
SigSauer P230 .380ACP
Glock G27 .40SW
SW Model 10-6 .38SPL

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What's next?

Post by scottc » Sun Apr 09, 2006 10:43 am

So what are you buying next? I am working on a Oly K8 Mag upper in .243 WSSM. Should be sweet!

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