re-barreling Colt 6920 after some use

[Androctonus]

Hello everyone. My plan is to free float my Colt 6920. I already have a nice handguard in the mail and was going to pay someone to shave down the FSB and install the rail. However, someone is selling a Daniel Defense mid length barrel with about 600 rounds through it for a good price. My Colt has about 1000-1200 rounds through it. Would it be a bad idea to use the Daniel Defense barrel with my existing bolt and carrier? I know it's not recommended to mix and match bolts and barrels, but I thought maybe it would be ok considering good components that aren't heavily worn.

[3 AE]

Hello everyone. My plan is to free float my Colt 6920. I already have a nice handguard in the mail and was going to pay someone to shave down the FSB and install the rail. However, someone is selling a Daniel Defense mid length barrel with about 600 rounds through it for a good price. My Colt has about 1000-1200 rounds through it. Would it be a bad idea to use the Daniel Defense barrel with my existing bolt and carrier? I know it's not recommended to mix and match bolts and barrels, but I thought maybe it would be ok considering good components that aren't heavily worn.

With only 1000-1200 rounds through the Colt, why not keep it as is and use the handguard on the DD barrel and build it up over time using a DD BCG? You can always use another AR in the family unless there are budgetary constraints.

[ggammell]

I wouldn’t switch a colt barrel with your round count for a DD mid with that round count. Shoot the piss out of what you have and switch when it’s worn out.

[Androctonus]

Thanks guys. I am on a tight budget. I'd love to just have a nice mid length upper in addition to the Colt, but I can't afford to. The CHF DD barrel and mid length gas would probably be a little nicer, but the Colt barrel is far from bad. Maybe I'll just keep the Colt together then.

[ggammell]

Keep the colt. Save money over the time it takes you to wear the zckkt out and you’ll have enough money to buy what ever upper or barrel you want.

[Androctonus]

It’s a tough choice. I think I’ll keep the Colt together though. I haven’t tested the accuracy of the Colt barrel, but I’ve read, when set up right, they’re more accurate than some people give them credit for. At least, I’ll be modifying a reliable rifle as little as possible to ditch the fixed front sight.

[jsbhike]

If the DD mid is their government profile then you wouldn't even get a major handling difference versus the 6920.

[26 Inf]

Thanks guys. I am on a tight budget. I'd love to just have a nice mid length upper in addition to the Colt, but I can't afford to. The CHF DD barrel and mid length gas would probably be a little nicer, but the Colt barrel is far from bad. Maybe I'll just keep the Colt together then.

If you can get the DD barrel for a price you can live with, why not get it and put it aside?

Sounds like you have the free-float enroute - does it use the GI barrel nut? Is it long enough tocover a mid-length gas block?

My impulse would be to get the barrel, if you can afford it, and over the next 5 or 6 months get the parts you need to complete another upper with the DD barrel.

Assuming you leave the Colt as is, here is a rough guesstimate:

BCM Blemished upper (I dare you to find the blem): $60.00 https://www.bravocompanyusa.com/BCM-Upper-Receiver-Assembly-M4-Flat-Top-demo-p/flat%20top%20-upper%20-m4%20demo.htm

BCM Mid-length Gas Tube: $15.00 https://www.bravocompanyusa.com/AR15-mid-length-gas-tube-p/gas-tube-mid-length.htm

A2 Flash Hider sold by BCM: $8.00 https://www.bravocompanyusa.com/a2-flash-hider-p/flash%20hider%20a2.htm

(May not be the absolute best price but you save shipping by buying lower cost items at the same place)

Geissele Carbon Steel Gas Block: $39.00 https://algdefense.com/carbon-steel-gas-block.html

Toolcraft BCG (C-158 Bolt): $90.00 http://www.wcarmory.com/toolcraft-bcg-223-5-56-bolt-carrier-group-black-1b1b6-c-158-mpi-complete.htm

So you'd need roughly $212.00 to complete another upper - if you have the barrel and rail. Then you'd have two uppers, and, if your are the norm, the next step would be a lower, and you'd have two complete rifles.

Just a thought.

[Androctonus]

Yeah, the DD is gov profile. The main appeal is the mid length gas. Though I don’t really know how much better that would be.

[Androctonus]

Thanks. The rail is a 13” BCM MCMR that comes with a new barrel nut. It would cover a mid length gas system. I’m going to have it put on the Colt though. Having the rail just sitting in a box would bug me.

[ccosby]

Yeah, the DD is gov profile. The main appeal is the mid length gas. Though I don’t really know how much better that would be.

My problem with the DD barrels is that the ones I've shot were over gassed. I'd stick with the colt barrel.

[26 Inf]

Thanks. The rail is a 13” BCM MCMR that comes with a new barrel nut. It would cover a mid length gas system. I’m going to have it put on the Colt though. Having the rail just sitting in a box would bug me.

Then grind off the front sight legs - you'll need to do that to get the barrel nut off w/o removing the gas block - smooth the marks and apply some cold blue.

Only problem is once you've down that there is no going back.

[RHINOWSO]

Seems like a waste to me. Hold onto the DD for a future replacement or build.

Shoot your 6920 more, as is.

I found a DD 14.5" LW Carbine gas barrel with LPG for $180 last month, put it away for a rainy day.