Compatible hand guard/rails with ATRS receiver set

[SQUAREHEAD1]

I would appreciate input, I have an 18.6” COLT CANADA barrel which I will be using. I really don’t need anything attached to the forward Handguard rail other then I will be using a Troy back up folding front sight … The only thing I will be using on the rifle is an ACOG and that will be on top of the receiver,
Is the Giessele MK14 - 15” a good choice that will go well “aesthetically” with the ATRS receiver? My goal is to have something solid, light, free-floating and something that obviously looks good with the lines of the receiver
Thanks for any advice for this old fashioned retro guy, I am new to the whole rails game...

[PinaKaleada]

Here is the seam, you need to file and shave the tabs.

[SQUAREHEAD1]

Wow, PK,
thank you so much for taking the time, I really appreciate it…
Is that the Giessele MK14? It looks great!

[PinaKaleada]

Wow, PK,
thank you so much for taking the time, I really appreciate it…
Is that the Giessele MK14? It looks great!

Yes Geissele MK14, It's a 13" though, I have the black and the FDE, and a M4A1 RIS II FDE waiting for 3 sets of receivers...

[SQUAREHEAD1]

Here’s my barrel, would you suggest that I go with the 13 inch or the 15 inch?
( Flash hider is not connected… Just loose for a picture )

[ColinD]

looks like carbine length gas, so a 13" would cover your gas black no problem.

I think it all comes down to preference in that case. Personally I think the 15" looks more proportional with an 18.6" barrel.

Remember the back of your barrel in going to seat all the way into the upper, so you can measure from the front of that collar to see exactly where the handguard ends.

[SQUAREHEAD1]

Thanks brother, yes, everyone seems to like the longer rail these days… You’re right!

[Whiteannerdy]

looks like carbine length gas, so a 13" would cover your gas black no problem.

I think it all comes down to preference in that case. Personally I think the 15" looks more proportional with an 18.6" barrel.

Remember the back of your barrel in going to seat all the way into the upper, so you can measure from the front of that collar to see exactly where the handguard ends.

All but the portion of the barrel extension that sits inside the threaded part of your upper. Your Handguard will sit almost all the way back except maybe 3/8” - 1/2”(guessing as I don’t have my AR in front of me)

[SQUAREHEAD1]

so, the actual rail will start where this ridge is, correct?

[ColinD]

so, the actual rail will start where this ridge is, correct?

Yes, pretty much.

Also, what caliper is that barrel?