Thinking of getting a more accurate barrel for Colt LE6920 M4.

[tickled pink]

I have been thinking of getting a more accurate barrel for my Colt LE6920 M4. I thought that if I bought this DCM barrel with the bull part about 12 inches then reduces diameter to the same as service rifle. This should shift more weight rearward compared to a bull barrel that extends to the muzzle which get the rifles balance better. What do you guys think. The bull barrels that extend to the muzzle makes the rifle more front heavy.

I had a Bushmaster DCM that would shoot -1/2" ten shot groups at 100 yds.

What do you guys think?

 

[Manny2_0]

I doubt you'd notice much diff. plus not worth the hassle

if you want more accurate, a trigger helps immensely

 

[nuclear_shooter]

You could also free float the handguard.

 

[rdinak]

My Colt 6920 Upper shoots well with a number of different loads. Have you tried putting in a nice trigger, scope and using match grade ammo to see what it is really capable of? 1/2 inch groups at 100 yards is not what you gun was made to shoot. Although with proper load this is certainly attainable.

 

[tickled pink]

My LE6920 has a Geissele SSA-E trigger which is very nice. The scope it has is a Bushnell AR/223 (4.5-18x40mm) and I reload Sierra 65 gr. Game Kings which shoot under an inch which I killed 3 deer with this year, but open up after three shots. I did get a box of Sierra 69 grain Match Kings, but haven't loaded up for a ladder test with them yet. Maybe I'm jumping to conclusions about not being accurate enough?

I haven't free floated the hand guard yet though.

PS: I almost for got. After I get my drop chart done I'm going to add one of these to my elevation turret.

http://customturretsystems.com

 

[thetonk]

the colts are great rifles, but its made as a "battle gun" so, not necessarily a match gun. If it were mine, i would build another upper for it, I use a wilson combat recon fluted stainless barrel on an umbrella rifle I built it'll shoot half to 3/4 inch all day, but thats an entirely different rifle. Colts have a bit of a following, if your one to hold onto your rifle forever, do what you want with it, but if your like me, big old revolving door, build an extra upper, and leave the original alone.

 

[nuclear_shooter]

the colts are great rifles, but its made as a "battle gun" so, not necessarily a match gun. If it were mine, i would build another upper for it, I use a wilson combat recon fluted stainless barrel on an umbrella rifle I built it'll shoot half to 3/4 inch all day, but thats an entirely different rifle. Colts have a bit of a following, if your one to hold onto your rifle forever, do what you want with it, but if your like me, big old revolving door, build an extra upper, and leave the original alone.

This is the problem I have with AR's. Once I get an upper, I think "well the lower is only 200 bucks more..." and then it becomes a new gun

 

[thetonk]

Yeah that happens to me all the time

 

[Crosshair]

I agree with building another upper. You can do it easy and on the cheap and still have a great shooting setup.
Here is a recipe for an ultra-budget spr/recce upper:
$230 Black hole weaponry 16" Hbar barrel SS 1:8 polygonal 3 groove from Surpluss Ammo
$Free stripped upper included with barrel by Aero Precision
$25 upper parts kit from PSA or other
$30 lo pro gas block and carbine gas tube from Surplus Ammo
$82 Yankee Hill Diamond series Free float forearm specter length from CTD
Use your Colt BCG and charging handle for now.

Total: $367 plus shipping and a six pack of beer while assembling.

Just an idea, there are thousands of different combinations at all different pricing, this is only one example of a 'cheap' upper that should easily shoot sub moa. And, you still have the 6920 upper that is very very good at what's it's for.

 

[Crispytortilla]

I'm in with the extra upper. I don't sell my rifles (yet). But can see the advantage of going back to original for resale. Plus building an upper is a great time if you are into it. And as stated above if you ever get the hankering you can just buy a new lower for the upper you build and have two rifles!

Sent from my GT-I9505G using Tapatalk

 

[GlockBlock]

Thinking of getting a more accurate barrel for Colt LE6920 M4.

White oak armament makes a fine upper for around $600.

 

[Smithcollector]

If it were mine I would try a Geissele trigger first - my 6920 with trigger and Larue rail is a reliably .75 minute gun. Even with a match upper you'll shoot better without a heavy combat trigger - you'll eventually buy the trigger anyway so it won't be a waste of money if the accuracy you want isn't there with the Colt upper.

 

[WadeP]

I doubt that Bushmaster barrel will be any more inherently accurate than your factory Colt barrel. If you're looking for 1/2 moa or better, spending more increases your chances. Think Obermeyer, Noveske, Hart, Shilen, Lilja...
Free-float handguard, a stock that allows for a consistent repeatable cheekweld and a pistol grip that optimizes your hand/trigger finger placement are also helpful.

 

[tickled pink]

I doubt that Bushmaster barrel will be any more inherently accurate than your factory Colt barrel. If you're looking for 1/2 moa or better, spending more increases your chances. Think Obermeyer, Noveske, Hart, Shilen, Lilja...
Free-float handguard, a stock that allows for a consistent repeatable cheekweld and a pistol grip that optimizes your hand/trigger finger placement are also helpful.

Sorry, but did not mention that I have a Geissele SSA-E trigger installed in my Colt already. I also have a Bushnell AR/223 scope which is 4.5-18x40mm which is great I have no trouble seeing my .223 bullet holes in the target at 100 yds. I want to shoot at longer ranges like I used to do with my Bushmaster DCM that would shoot (10) shot groups less than 1/2" at 100 yds. After about 3 shots my Colt starts to open up the group size because of heating of the thin barrel. I would also install a free float hand guard. I thought that the way the Bushmaster barrel is designed with the 1 inch diameter for the first 12 inches then drop down to service diameter would help to keep more weight towards the rear to help balance it better. The Bushmaster DCM rifles are competitive out to 1,000 yds. in High Power Competition so I would think their DCM barrels should be very accurate. Mine was right out of the box with my reloads when I competed in High Power.

PS: White Oak Armament looks interesting:

http://www.whiteoakarmament.com/xcart/home.php

 

[tickled pink]

I am torn between these complete uppers the 18" (1 in 7 twist) & 20" (1 in 7 twist) to replace the upper that came with the Colt LE6920 M4. I want to shoot 65 to 77 grain bullets out to 600 yds. plus. It will be used for hunting antelope, deer, coyotes and informal target shooting. The price is the same for either so which one do you think I should get. I am a little concerned with balance so I'm kind of leaning towards the 18". These varmint uppers are both listed on the White Oak Armament web site. White Oak Armament | Complete Uppers | Varmint Uppers

Which one would you pick and why? Below is my Colt LE6920 M4 which has a Geissele SSA-E trigger and a Bushnell AR/223 scope which has a 4.5-18x40mm zoom.

PS: I think I'm going to $h!% or get off the pot and order one Monday.

 

[Cobracutter]

Build a new rifle... Don't molest a 6920, which will hold its value should you decide to sell it.

Come up with a budget and then design around that. Like has already been said, you most likley will not get as much performance/price ratio as white oak.

 

[tickled pink]

Build a new rifle... Don't molest a 6920, which will hold its value should you decide to sell it.

Come up with a budget and then design around that. Like has already been said, you most likley will not get as much performance/price ratio as white oak.

If I get one of the uppers mentioned above I can put it on my Colt lower and later get another lower then I would have two ARs. What is wrong with going that route?

 

[Cobracutter]

There is nothing wrong with it. Thats a good way to go.

 

[FLIGHT762]

A lot of guys like the Rock river Arms Predator Pursuit upper. They come in 16" and 20" for $675.00. I would think the 20" would suit your needs better than the Colt 16" M-4. If you want to go with White Oak, they make good barrels. RRA is just another option.

Rock River Arms: Predator Pursuit Rifle / Mid-Length Upper Half

 

[tickled pink]

In the morning I'm going to order this 18" upper and have the barrel fluted like this one to save about 1 pound of weight.

 

[TLB2]

LooK at Ar performance melonite barrels. Ive got a 6.8 barrel thats very accurate.

 

[tickled pink]

Well I just put the order in to WOA for the 18" full upper with a full length fluted barrel. Now all I have to do is wait.

 

[Cobracutter]

Great choice.... they are very tough to beat for the money.

 

[tickled pink]

Thanks Cobracutter. Now I will need a new "GOOD" inexpensive lower to go with the new upper. Then I will move the Geissele SSA-E trigger from the Colt lower into the other lower. Then I will be able to sell the Colt and hope fully recoup most of the money I have in it. Then I will have what I wanted in the first place. I will have to chalk it up to a learning experience.

Anyone know where I can get a lower?

 

[tickled pink]

I have just been advised to just sell the Colt upper to help fund the WOA upper and keep the Colt lower which has the Geissele SSA-E trigger. The Colt upper has less than 100 rounds through it. What do you think it is worth? I am going to keep the Bushnell 4.5-18x40mm scope and put it on the new WOA upper.

 

[USACS]

+1 on just buying a whole new built upper. BCM uses Krieger barrels, Noveske uses PacNor barrels, etc. There are plenty of high quality options available.
Or just build your own additional free float upper with a WOA, Noveske or Rainier Arms barrel.

 

[tickled pink]

This is the complete upper that I ordered from WOA and the 18" barrel will be full length fluted similar like the picture. Caliber will be 223/556.