6920 vs. 6940

[peruna]

Hi, all. I've been a lurker for a while, but have not posted until today.

I am getting ready to buy a Colt M4, but would first like to hear from any members who have experience with both which model is recommended between the 6920 and the 6940.

I currently own an AR-15 and a CAR-15 (both A2s), and am pretty much old school when it comes to firearms, but I do want a flat top version so I can mount optics. hence the upcoming purchase......

In my area, the price difference is around $300. While I don't plan on mounting a bunch of crap to the rifle, I do like the flip up sights on the 6940 and when I priced out adding the sights and a picatinny 1913 rail, I'm coming out ahead on the 6940.


Thanks in advance.

[CharlieMike]

In my area, the price difference is around $300. While I don't plan on mounting a bunch of crap to the rifle, I do like the flip up sights on the 6940 and when I priced out adding the sights and a picatinny 1913 rail, I'm coming out ahead on the 6940.

Thanks in advance.

My problem with the 6940 is that you're stuck with the, IMHO, short rail/foregrip that it comes with.

I would get the 6920 and if you find yourself needing a rail, buy a quality one with the $300 difference. I think the 6920 is more versatile.

[shawnmt6601]

the 6920 is more versitlile if you want to play barbie constantly with AR15s which is ok, but the 6940 has everything you need already. some made complain about t some things or the looks of the rail or how many holes it has or something else just as retarded, it is the best of the two if you want a ready to go AR I have 3 6920s and thought I would never like anything better, but once I got my 6940 Ihave made a 180, its eveything I will ever need

[CharlieMike]

the 6920 is more versitlile if you want to play barbie constantly with AR15s which is ok, but the 6940 has everything you need already.

What if you need a longer rail?

[gtmtnbiker98]

New upper.

[theJanitor]

this opinion might be without base, but the folding front sight does not look as robust as a fixed FSB. couple that with the fact that i don't like short rails, and the 6920 would be my choice. i believe i heard Pat Rogers say that the folding front sight on the 6940 was a weak point of the design. but Colt does have a part number for a monolithic 6940 with a fixed FSB.

i think the carbine would be more versatile, lighter, and cheaper if you went with the 6920 and an omega rail

[peruna]

Hey, CM. Thanks for the response.

Originally, I was wanting the 6920 so I could mount an Eotech to it without using an adaptor, but I saw the 6940 and thought I may want to add a magnifier at some point, so my interest was piqued.

When I did a search for reviews, I saw complaints about the 6940 such as the selector switch feels like it's binding, etc., so I wanted to find out if there were any other "issues" with the new 6940.

I'll likely go with the 6920, but just wanted some feedback on the two models since I am only buying one......

[RogerinTPA]

I'd rather have the 6920, I have 2. I like the fixed FSB, it's more robust, with a rifle length rail (Ala DD M4) to get my support hand further out. Personal preference. If Colt would have ran the rail out further, or made them with different length monolithic rails, I'd buy one.

[alistaire]

Go handle them both and see which you like better.

[peruna]

Thank you for the responses.

The length of the rail is a personal preference and I will figure that out when I go and handle them.

I'm thinking the review I read complaining about the selector switch may have been (hopefully) unique to that one example, but the posts about the FSB are the sort of feedback I was looking for.

[lomp64]

I would agree with what everyone has said; the 6920 is the way to go. You can easily change it to a similar setup as the 6940 where as it would be much more difficult to change the 6940.

I am also not a fan of the Matech BUIS on the 6940; the spring that holds them down tends to stop working after a while, and they have a smaller aperture only. I also happen to prefer a FSP instead of a flip-up style front sight.

6920 prices these days are a steal as well. Either way you will end up with a fine rifle.

Just my 2 cents

[Kentucky Cop]

this opinion might be without base, but the folding front sight does not look as robust as a fixed FSB. couple that with the fact that i don't like short rails, and the 6920 would be my choice. i believe i heard Pat Rogers say that the folding front sight on the 6940 was a weak point of the design. but Colt does have a part number for a monolithic 6940 with a fixed FSB.

i think the carbine would be more versatile, lighter, and cheaper if you went with the 6920 and an omega rail

So are you saying I can order a 6940 "with" the fixed FSB like the 6920? If so, how or who does one talk to about that? Thanks for any info you can provide!
Ky cop

[theJanitor]

i thought the 6941 part number would be the 14.5 version, but a few reliable people have said that this number will be for the fixed front sight version.


"I consider it to be a weak link, and would prefer that the 6940 had a fixed front sight- or a 9" rail." - Pat Rogers

"The fixed sight monolith is the 6941. I tried to find a link for it, but was unsuccessful." - Stephen

"For those who want a fixed front sight with the 7" rail, the 6941 should be in that configuration." - nyeti

[theJanitor]

also, i believe that a standard Fmarked FSB drilled for taper pins can replace the factory folding sight on a 6940

[Surf]

I own each type. I will echo what has been said. I get pretty far out on the rail with my grip and the 6940 is not as accommodating for this. I also do not care for the front and rear sights on the 6940, mostly out of a fear of durability. I will say however, that the 6940 has been more accurate than either of my 6920's. A couple other guys who have 6940's also make note of this. Of course the rail is a factor, but I would not have guessed that there would have been as noticeable of a difference.

[ST911]

I will say however, that the 6940 has been more accurate than either of my 6920's. A couple other guys who have 6940's also make note of this. Of course the rail is a factor, but I would not have guessed that there would have been as noticeable of a difference.

Can you quantify the difference?

[Kentucky Cop]

Just made a call to Colts CS. Talk to a nice lady named Kara who stated that the Colt 6941 was just a prototype and they decided not to go thru with it after all. It was never put into production and she doubts they will anytime soon. And there you have it....:)

Ky Cop

[Evil Colt 6920]

Ill throw in one more vote for the 6920. And also I think the EOTech optics are great but I havent had the oppurtunity to look through any of the higher quality optics like Trijicon, Aimpoint and ACOG. I am as happy as can be with my 6920. Id still be at the range but I had to come home, UPS will be here soon with my Troy Battle sight BUIS. :D
http://i497.photobucket.com/albums/rr339/shotgunspree/009.jpg

[The Dumb Gun Collector]

I don't think much of rails. But if you are getting one anyway, you might as well get the Colt factory set up.

[sabretom]

I wrestled with the choice for months. Then, Clyde Armory put the6940 on sale for $1289. 6940 it was. With the quality of the close quarter optics, the BUIS will be in the up position for zero and thats about it. Of course, rail length is personal preference. I happen to like the GI Matech.

[rob_s]

also, i believe that a standard Fmarked FSB drilled for taper pins can replace the factory folding sight on a 6940

That's not entirely accurate.

FSBs are drilled for pins after they are installed and aligned on the barrel. Technically speaking this means that every FSB is custom fit to the barrel it is on. Years ago GG&G would remove your stock FSB, measure the spacing, and drill their flipup front to match before re-installing the original pins. I know this because I had it done. It was stupid expensive but it was the strongest flip-up FSB mount at the time.

[Iceberg]

To make it easier on me, I just bought both. I mounted a EoTech 512 onto my 6940 and I plan on leaving my 6920 stock.