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so I went to the range for the first time today since installing an Evo 11 on my rifle. Install was super easy with no issues. The hand guard mated up nice and flush with the receiver and I mounted my new Troy folding front sight (I used to have a FSB that I replaced with a LP gas block). I began getting her sighted in and I was getting hits maybe 12-16" to the left at approx 40ish yards. I should've figured something was wrong since the rear sight wasn't touched-- I should have only had to adjust my elevation, but after adjusting 5 or 6 times and never getting on target I knew something was up. I mounted my aimpoint back on the top of my receiver instead of the handguard and my shots were right on the money.
So it's got to be either the Troy sight or the Samson rail right? Anybody heard of this kind of thing before? I can see how this could be possible with a free float vs FSB, but I don't see anything jumping out at me that explains it. Thanks for the help!
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I've been building an A&A Piston, Picatinny gas block, mid length, with a 9.5 EX EVO rail. played with bushings until they liked one side of barrel nut, barrel nut needs to be clocked for gas tube or piston rod. My rail went on easy, anti rotation tab's eased into place on the upper ( new take off A&A ) then I put Gas block on barrel and pushed it into the rail cutout to get as close to EVO as
ridge will let it. For alignment I used a PRI picatinny rail vice block to lock up the EVO rail at the Upper/back of rail joint, and I used a similar tool for the gas block /Front picatinny rail joint.
So my directions don't express torque values other than " not too tight ", and Samsons website has morphed into a new " Lite " version, without videos or link's to help, faq's et al.......
After I " not too tight " my rail, and torque my gas block, I remove the PRI and gas block picatinny tools. Rail looks great, straight and true....after handling the upper, putting it on lower, cycling the bolt et al...I go to check the picatinny joints at the upper/rail and gas block/rail joints.......and I notice that the rail and gas block are not on the same plane, my Pri picatinny tool will not slide from EVO rail onto the gas block, vise versa....it will slide, with alot of effort, along the picatinny rail at the upper/rail joint....So I'm in the process of re checking my assembly, and checking the EVO rail picatinny top with a straight edge.
I will say that there is definitely flex in the rail when its all locked into place, flex as in at the muzzle end of the rail...with out torque spec's from Samson, I don't want to go to far, but I'm definitely
tight, but " not too tight ".