Yeah, for small screws, I don’t actually use blue loctite anymore. I use Blue Vibra-tite Gel. It stays put and seems to resist vibration better than normal loctite. I have used it on scope rings for many a precision rifle. It is also aluminum friendly.
The manual for the rail rec’s blue threadlocker…so it’ll get a nice dab of VT Blue gel before assembly.
More pix. Waiting on the V7 lightweight ejection port cover and the PA AFAB to arrive before final assembly.
Looks good an. Def like the Rainier version more than the normal Samson evo. Either way however I don’t think I’ll be going the samson route again. Just not digging the rail too much nor the mounting system used. Prefer the Centurion or Fortis mounting method much more.
Looking forward to pics to see how the Rainier version looks however.
I wonder if the set screw is to help keep the handguard level? I just remembered several folks had problems with these tilting and being uneven when mounting.
It doesn’t appear to be. The screw didn’t affect the orientation or alignment of the HG one bit when I tightened it.
The white residue is just dry skin from my hands. Wiped right off after I took the pix.
I’m very pleased so far.
Noticed there is a slight gap between HG and upper receiver; is that intentional?
Also, how do you know when to stop tightening the 2 bolts clamping the rear of the HG? On my 12" Evo I ended up tightening till the gap disappeared. No play even without the new set screw.
Very happy with it.
Well, that is just the way it lined-up after tightening. You can’t even fit a post-it note in there (I just tried) and it is laterally uniform. I’ve seen several big-name rails with visually larger gaps than that (but they were still rock solid). I’m not sweating it.
As for tightening, I don’t have a wheeler FAT wrench. I’m a pretty strong guy, so I just tighten until I start to feel reasonable resistance. I purposefully have a set of cheap hex wrenches that bend easily for jobs like this ($1.99 for a 12 pack at Harbor Freight). Once the wrench starts to flex, I stop.
The right way to do it is to know how many inch-lbs you are putting on the fastener via the FAT wrench. Also, no torque spec was called-for in the installation sheet.
Thanks!
Looking forward to your review of the newer muzzle device in another thread. Ran a BC then the Griffin Flash Comp, now the Dynamic Resistance Comp.
Alright. Still digging this rail. Lightest 18" upper i have yet held or shot. Only way to go lighter is the BCM kmr 15" which doesn’t even exist yet.
Gun with aimpoint t1 in a Larue lt660, Magpul mbus front and rear, BCM gunfighter mod 4, umbrella corp grip, Magpul aluminum trigger guard, bad lever, precision armament AFAB, 4140 steel gas block, Rainer sling mount, 15" Evo rail, Vltor A5 receiver extension with a5h3 buffer, Magpul STR with enhanced buttpad, single cr123a battery, and a small bottle of machine gunners lube.
All of that weighs 7.71 lbs. F@CK YESSSSSSSS!!!
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Also thinking about a titanium forward assist…
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Alright, I just uninstalled this rail in anticipation of my 13.5" KMR arriving tomorrow and DAMN was it difficult to get off (but in a good way).
Lockup is ROCK solid. It was so solid, I had to put my upper in a vice to get the rail to slide off AFTER I removed all the clamping screws and dripped some FireClean lube in between the heat sinks and the rail (and twisted/pulled a LOT before putting it in the vice). I’m a big guy and it took quite a bit of pulling on my part even when using the vice, despite the fact that rail still had some residue of lube in between the heat sink pieces and the rail where the fireclean had not yet migrated to (it was not dry).
To achieve this level of strength on the install, just tighten the clamp screws until the sides of the clamp are touching or nearly touching with some blue loctite on the threads. Let the loctite set for at least 24 hours before shooting it and you’re golden.
Despite the fact that I’m transitioning to the KMR, I am very pleased with the rail, and even more so after uninstalling it, as I know there were doubts or questions about the strength of the lockup. Bottom line: fear not, this bitch is ON THERE if you tighten the screws properly and use blue loctite or equivalent. That is all.