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I used the Rainier Arms version in 9.0 to build my 300 BLK wit 10" barrel. I also put some together for someone in Texas using the 11" version (IIRC) and they seem like a pretty good rail for the money.
One thing for sure is that they are super light.
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I won a 15" Samson at the Blue Ridge Mountain 3-gun. I never paid much attention to them up till walking up to the prize table and grabbing it. I replaced the 13" TRX I had on my 3-gun rifle with it and am very impressed. I was a little concern with the weight and balance being 2 inches longer but noticed nothing negative. The extra length also helps to cover up the 18" Noveske barrel....
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I know this thread is old, but this is the thread for it:
Does OP (or anyone else) have any update after long-term use on the Samson Evolution rail? Still using it? Still holding strong?
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I have been using the Samson evo rails since they became available. No issues to this point and I don't expect any. I also have what is one of the first Samson 308 rails on a Smith M&P10. It fit right up and feels great (no trigger time on the gun just yet however). Highly recommended.
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Using the 12.3" Ranier version of Sampson Evo. Solid, a little warm but cools off quickly. No regrets.
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Rainier Arms Evo rail user for almost two years now. No issues to report. Light, solid, affordable and looks good.
Sent from my Samsung Galaxy S4
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Just built a new patrol upper using the RA 15" Evo version. Very pleased. If the BCM KMR 13" weren't fully HALF the weight, I would be perfectly happy with the Evo as it is one of the lightest 15" rails I currently know of.
But weight savings is an issue for me (trying to offset the addition of a light), so a KMR is in my future. Regardless, I am very pleased and impressed with the Evo for the money. It is very light (especially in the shorter lengths) and remains a quiet bargain.
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I chose the EVO EX version for a 10.5" rifle. I wanted a tube type rail that extended beyond the fixed FSB and the EX fits that use with some modification of the FSB. I have since installed 4 others for the same type of set up. I very much like mine and so do the others running them.
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I just installed one of these Samson rails on a rifle and it went fine. Just need some attention to detail on the orientation of the Thermal bushings.
I weighed before & after, and if you are replacing a set of Magpul Midlength handguards then your net gain is only a couple of ounces.