NEW Wilson Combat TRIM Rail Interface System for AR-15's

The T.R.I.M. (Tactical Rail Interface, Modular) AR rail has been designed by the Wilson Combat engineering team to be among the lightest, strongest and most versatile compact free-floating rail systems on the market.
Light, Strong and Compact Free-Floating Rail Design
Machined from 6005A-T5 Aluminum Extrusion
Mil-Spec Hard Anodized Black Finish
Simple, 5-Minute Installation with Common Hand Tools
Easily Removed or Replaced in the Field
Quick Custom Positioning of Supplied Rail Segment
Large Internal Diameter Covers Low Profile Gas Blocks and Many Piston Systems
Dual, Integral Push-Button Sling Attachment Points
Machined of high-strength 6005A-T5 aircraft aluminum with a Mil-Spec hard anodized finish, the T.R.I.M. rail handguard / interface and its robust, anti-rotational mounting system doesn't sacrifice strength, stability or accuracy over bulkier designs. The oversize and tough nitrocarburized 4130 steel barrel attachment nut reduces heat transfer and the ergonomic handguard design offers a sleek, non-abrasive platform for comfortable dynamic shooting.

Light, strong and easy to install-the Wilson Combat T.R.I.M. AR-15 rail interface solves multiple installation issues our gunsmiths have encountered with other rail systems in over 10 years of building thousands of our custom AR-15 rifles. The entire T.R.I.M. interface can be easily end-user installed in five minutes with common hand tools and can be quickly removed or replaced with a different length rail interface in the field with nothing more than a hex key.

The T.R.I.M.'s attachment points enable the end-user to quickly position the supplied modular Picatinny rail panel on the attached interface in pre-specified locations. A generous inside diameter of 1.47" accepts low profile gas blocks and many of the available piston gas systems. Integral push-button Q.D. sling swivel attachment points are located on both sides of the T.R.I.M. for the ultimate in sling mounting versatility.

SPECIFICATIONS

TR-TRIM-7.3 7.3" Carbine Length 10 oz.
TR-TRIM-9.3 9.3" Mid-Length 11.5 oz.
TR-TRIM-10.4 10.4" SBR Length 12.2 oz.
TR-TRIM-12.6 12.6" Rifle Length 13.9 oz.
Weight Includes: Rail Interface, 4130 Steel Barrel Attachment Nut, 6 Cap Head Screws







Pricing, installation video and other information HERE >>>>>>>WILSON COMBAT TRIM RAIL

That's a real nice rail right thurr. Thanks for including the weight WITH the barrel nut - wish every manufacturer would do that.

Congrats on the new product, it looks very good!

What is the difference between this rail and your other rail which looks similar?

maleante,
If you mean our old rail system..


....it is totally different. Different method of attaching to the carbine, the new TRIM rail has modular, removable rail rail segments. The new TRIM rail is MUCH lighter. The new TRIM rail can be installed with common tools. On and On....the new TRIM rail is a VAST improvement over the older rail.

I really like the integral QD sling mounts. Is this going to be priced to compete with the Troy TRX Extreme?

Man that is a good looking rail, I was gonna hold out for the Centurian rail but I think I will go with one of these.

Hey WCR, can you give some dimensional specs on these? Particularly, exactly how wide is the rail?

Good looking rail guys, nicely done.

love watching the platform become more and more versatile

The only thing that setup needs to be "Perfect" would be a optional stud insert for direct Harris bipod mounting.

Here is a cross section drawing, to help answer your questions.....

Link To Entry

1.88 wide - VERY NICE. This will give the DD Omega X a run for it's money for sure...

I love WC stuff.

Will these fit an AR-10?

That really looks good. Really good.

nICE.

Nicely done....congratulations. Would you mind telling us the components of the rail pictured with the flush mounted suppressor (i.e., barrel length and length of rail used)?

Thank you

Hate to be a burden but....... Any available photo's of the 12.6" rail on a 16" upper? Would like to see how it would look on my set up. I was about to pull the trigger on the new Samson rail until I saw this one. Although the price is a quite higher, there are some features I like more on this TRIM rail.

One other question. How does it stand up to heat in comparison to the other thin tubular rails. I have heard they heat up quick, how does the TRIM hold out?

Working on more photo's of completed uppers.....should have some more up next week.

Regarding heat, yup do a few mag dumps, and it gets warm. It "stands up" to heat just fine, but yeah, it will get warm eventually.

Regarding the suppressed carbine in the picture, here are the componets....
Barrel
TRIM 10.4 SBR
Muzzle Brake/Attachment Mount
Suppressor

I am now looking for some TRIM big time

Thanks for the reply. It does seems a little thicker than some of the other tubular rails which would insulate longer and also raise my confidence in it's rigidity. Well I guess I am straying from my original decision and going to be jumping on the TRIM train soon.

Thanks again

Nice design. A couple comments:
- I like the mounting system. In my experience this is better than the other one piece tubes out there right now that 'clamp' to the barrel nut.
- Modular rails are the way to go in my opinion. No need for miles of rail that just sits there, so it's good to see that feature.
- Price seems a little high, although about equal to what is the gold standard in handguards for me currently. If these prove to be of quality on par with the price though...we all know you get what you pay for. One feature that helps justify the price is integral push button sling attachment points.
-The weights look good if these are as solid as they look.

A couple questions:
-The description mentions "anti-rotational mounting system" but I don't see anything that looks to prevent rotation of the handguard relative to the receiver. Is the barrel nut torque the only thing preventing rotation?
-Are the carbine, mid, and rifle length designed to fit behind a standard FSB at those respective positions?

Krichbaun,
Yes, the TRIM 7.3"(Carbine length) is the right length to mount a standard GI front sight tower just ahead of the rail on a carbine length gas system barrel. Same for the TRIM 9.3"( Mid-length) is correct for that application for a mid-length gas barrel, and the TRIM 12.6"( Rifle length) is correct for a barrel with rifle length gas system.

The TRIM 10.4" SBR rail is set up specifically for our carbine gas system, 11.3" SBR barrels, to use with our WHISPER suppressor system. When these componets are used together, you get a nice near seamless setup, where the rail ends right at the rear of the suppressor, which works out very nice...


The TRIM 10.4" also work well on a Mid-length gas barrel. The 10.4" rail is just long enough to cover a low-profile gas block on a mid-length gas system barrel. Plenty of options!

Also-anti-rotational refers to the fact that the rail doesn't torque-against the barrel nut when installed-the rail attaches directly to the "nut" using 6 hardened screws. Look that the size of the nitrocarburized barrel attachment nut-when torqued to proper specs, IT IS NOT MOVING. We have installed thousands of rails over the last decade. Some good. Some bad. A properly torqued rail of this design is not moving. In addition, most anti-rotational rails that do move will irreparably damage the gas tube and the rifle will cease functioning. If one of these rails that was improperly installed decides to move, the rifle will still function since the gas tube will remain untouched.

That just looks beautiful .....If only my account would allow for the whole set up

what I would do to have that upper........

That looks pretty durn good. I can't wait to get my hands on one of those

See my question in the other thread they started, they (Wilson) have yet to answer. http://www.ar15.com/forums/topic.html?b=3&f=12&t=525988

There is nothing aside from torque preventing this whole unit from turning off the barrel.

Lapp_Dance,
Sorry I missed this question, as we have been answering quite a few over the weekend. I answered a similar question in a separate sub-forum...

Anti-rotational refers to the fact that the rail doesn't torque-against the barrel nut when installed-the rail attaches directly to the "nut" using 6 hardened screws. Look that the size of the nitrocarburized barrel attachment nut-when torqued to proper specs, IT IS NOT MOVING. We have installed thousands of rails( from various manufacturers) over the last decade. Some good. Some bad. A properly torqued rail of this design is not moving. In addition, most anti-rotational rails that do move will irreparably damage the gas tube and the rifle will cease functioning. If one of these rails that was improperly installed decides to move, the rifle will still function since the gas tube will remain untouched.

The user can add Locktite to the threads of the barrel nut if he choses, but we do not find it necessary nor do we recommend it

thats fine and it is a nice light rail ...BUT you do need to have "ears " or some other physical means to prevent rotation of the rail because if the rail moves so does the barrel nut and now the barrel is loose.

this is needed especially with VFG because it can act as a lever and easily torque the barrel nut loose.

That is just not the experience of our shop and other shops that produce similar rail systems. A properly installed TRIM rail is not coming loose.

If you are really concerned, just use Black max or Green Loctite in the installation and you will have to cut it off with a saw to remove it.

PS-We have only installed a few thousand rails.........

Don't DD rails all use friction on the barrel nut as well? I've never heard of those having an issue of spinning or loosening the barrel nut as some of you guys have suggested that this rail might, and they certainly don't have any "ears" touching the receiver.

For what it's worth, I was very seriously about to order one of these. A stated feature is 'anti rotation', and I understood that to be something different from what they actually mean. I thought it had some means to prevent rotation reletive to the receiver, but it is just referring to how the tube attaches to the barrel nut. It's still a very good design and I may still get one.

You're correct about the DD rails, at least the Omega X and the Lite (not sure about other models they have). That's one reason I don't like those rails that much, but I have to say that a properly torqued barrel nut is going to be very hard to move. And the DD design allows you to torque the nut right up to the maximum since the design doesn't require the nut be clocked a certain way. I did have a rail similar to the Wilson design come loose due to torquing on a VFG, but the nut wasn't torqued to the upper end of the tolerance; it was close to the lower end of the tolerance. That one took a custom made shim to get the torque right. As long as the Wilson design has some way to get the barrel nut torque up to the upper end of the tolerance on every installation, I think it will be ok for most users.

So, does this design allow for getting close to the maximum barrel nut torque on all installations, considering tolerances of the other parts can sometimes put the barrel nut in a position where it ends up barely torqued to the minimum with the alternative being exceeding the maximum torque (in order to clock the barrel nut for proper alignment)?

The lite rails have the mounting screws on the receiver side to stop rotation, and the omega rails have the set screws which lock into the standard barrel nut teeth

What guy doesn't love TRIM?

Looks good!

kirchbaum,
The TRIM rail takes your concerns into account. So you can torgue the rail to the desired torque and still line up the barrel nut to the desired location, the barrel nut is double ended, and engineered so that each end will "time" differently, AND it also comes with a shim, that will give you a third and fourth option for timing the the barrel nut. We have yet to have a receiver that we could not get this rail to time too....if anyone ever does have a problem, we will take care of mother needs!

I thought that might be the case. That's very good to know, thanks.

The bolts on the lite rail make no contact with the receiver and only would if the rail rotated something like 15 degrees. They do not and are not intended to be antirotation devices. They are there to clamp the rail to the barrel nut.

The set screws on the omega do not go into the teeth of the barrel nut as you describe. They push on the front of the barrel nut clamping the back section of the rail to the back edge of the barrel nut. This becomes more obvious on the omega X rail which uses a barrel nut with no "teeth" but still clamps on with the set screws and the same method.

I've got nothing against dd rails. I love them. My point is that this new Wilson rail attaches in a similar method and for it to be criticized for a lack of contact with the receiver is odd when some of the most respected rails around are built the same way.

The fact that Wilson combat has now confirmed this system would allow for the barrel nut to be torqued to the high end of the spec, in my mind ends any fear that this rail wouldn't be as reliable as the others I mentioned.

It's been a while since I installed either of the DD rails, and I did own them both at some point, but in both cases, didn't the gas tube still go through the barrel nut, not just over top of it?

I found this from back in november...

Just curious if anyone has received one of these yet and how they like it........

I got my rifle length TRIM rail this week, and it is sweet! I have it installed on my upper, and the fit is great. I'm still waiting on a barrel to complete this build, but with any luck, it'll only be another week or 2 before my barrel ships...

What I like to hear..... What length barrel and gas system do you have on your upper? Would you mind posting any pictures? Thanks for the input

This rail really looks like the ideal rail I've been waiting for: modular, small dimensions, qd sockets etc.

Other than price.....I feel the same way. It also seems a little more robust compared to the Troy and Samson tubular rails. That is why I put an order in for mine today

Will post pics when I have it in my possession and installed

The price is steep but it is comparable to most of the big dog rail companies (DD, LT etc).

I'm looking forward to seeing your review. Meanwhile, I got to start planning what kind of build I'm going to put this rail on.

Well I definitely agree that it is comparable to most of the standard 4 sided free float rails.....If you look at the other tubular rails in its class such as the Troy and Samson, it's quite a bit pricier.

Either way, I just installed a Wilson Combat TTU on my rifle today and if the quality is anything like the trigger (which I'm sure it will be) it is going to be a nice addition. Keep us up to date with your build! I initially wanted to put it on either a CMMG or BCM 14.5"middy but decided to just swap out my DD Omega Rail on my 16" carbine for this one.

I just got the email that my rail should be here on Friday.....That said, I am a little disappointed that it took over 48 hours to process my order and have it shipped. Normally order's placed elsewhere, if made early morning, leave the warehouse same day or the next at the latest.... Finger's crossed it gets here by Friday!

SPIKES rails have the ears to prevent rotation

LaRue also has anti rotation protection.


this is not rocket science ––it is common sense.

I like the fact that if it does move it won't damage the gas tube

Agreed but if there was something to prevent this in the first place it would be on my buy list for my current build. Still on the fence right now. I already have LaRue rails on two of my ARs but really like this one.

Damn that's nice.

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