DD has 18" CHF 1:7 barrels for sale NOW

[SomeOtherGuy]

@Rypht

Sorry for digging up an old thread, but I was curious if anyone that had plans on getting one of these barrels had gotten any kind of explanation from DD why they went with a mid legth gas system in an 18" barrel?

I have one of these, I’ve chatted with a DD rep, and I never got any explanation. I’m guessing two reasons:

1. My original guess “I’m wondering if the midlength gas port was chosen to allow a standard .750” gas block without having to change the intended taper much. I wonder if a rifle length port would have worked with the not too uncommon .625" gas block, however."
2. With midlength gas you can cover up the gas block with various DD rail options. If they had gone to rifle I don’t think any of their existing rails would cover the gas block.

I actually have the FSB off of mine right now, and the gas port is bigger looking than I expected - but I don’t have the tools to measure its exact diameter. I was assured by the DD rep that it is not overgassed. I haven’t shot it yet.

[An_Undocumented_Work]

@Rypht

Sorry for digging up an old thread, but I was curious if anyone that had plans on getting one of these barrels had gotten any kind of explanation from DD why they went with a mid legth gas system in an 18" barrel?

Finally got mine from DD built into a URG last week. I also put a battle comp on it and mated it up to a lower with the Vltor A5 reciever extension/buffer. It is the smoothest shooting AR I’ve personally shot. A basic rudimentary accuracy test using the TA-11 ACOG from my other AR allowed me to achieve just a hair over 1 moa at 100 yrds with federal gold medal match 69 grn open tip ammo.

I had them build it with a FSB and DD lite rail, I like to think of it as modernized version of the M16

[Caeser25]

@An_Undocumented_Work

Finally got mine from DD built into a URG last week. I also put a battle comp on it and mated it up to a lower with the Vltor A5 reciever extension/buffer. It is the smoothest shooting AR I’ve personally shot. A basic rudimentary accuracy test using the TA-11 ACOG from my other AR allowed me to achieve just a hair over 1 moa at 100 yrds with federal gold medal match 69 grn open tip ammo.

I had them build it with a FSB and DD lite rail, I like to think of it as modernized version of the M16

Pics?

[An_Undocumented_Work]

No pics, don’t have a camera. the setup is the 18" barrel, F marked FSB, DD 12" FSP Lite Rail, m4 upper receiver, DD BCG. DD A1.5 rear sight. DSA blem lower, GI lower parts kit/ FCG and grip, VLTOR A5 kit with emod, and a battlecomp

The center of gravity on this rig is somewhere right around the front third of the magwell.