![]() ![]() Ruger sent me a prepaid label to ship back for replacement and the one I got threads on fine but still has razor sharp burs. Terrible burs on the cross drilled holes too. The first one I got had a bad spot on the threads and obviously would not thread onto host. I like that it uses a jam nut instead of a crush washer to time the brake. I have 2 of these brakes, both are installed on rifles chambered in 6.5 Creedmoor. Pulled off my rpr to run suppressed, put the hybrid on a kel tec rfb and it helps tremendously with recoil and noise I am most likely going to have to send the gun back to Ruger. ![]() Good job it's now sorted.Product Reviews Click here to review this itemīought this brand new and it had zero directions and I attempted to put this on my Ruger American 7.62x39 and it got stuck on my rifle and now will not turn. Shout loud enough for long enough, and play the safety card and someone somewhere should listen, as may have been the case here. As these were intended to sell mostly in the State's, marketed for "Law enforcement and Military" but ostensibly more civilians will buy them up (when did you last see the military sporting Tikkas?). It does look as if Tikka are now properly undercutting the threads as it isn't really helpful to issue statements like ".designed for use with a muzzle break so we see no problem.". The interim solution was to provide crush washers (which does work as the square face of the mod then has a square face of the washers to mate with so stays concentric to the barrel as the washers are stacked so that the thread effectively undercuts them). I followed this up, not satisfied that I had invalidated my warranty by doing what Tikka should have done in the first place, and to be fair to GMK, they did, shortly afterwards meet with Tikka to discuss the issue. I had mine undercut and put pressure on GMK to address this is it doesn't half scare the crap out of you when pulling the trigger, and seeing impact miles to one side and high.at 25 yds!!!! You then check your mod to see that it's b&ggered and the rounds have been clipping it on the way out. The third solution is to have your mod thread counterbored providing that you can afford to lose approx 2mm of thread. It's a ridiculous situation and should never have occured but there are now readily adoptable solutions. This, however, will invalidate any warranty. For my part, I have chosen to have my thread properly undercut so that the mod squares up properly against the main barrel. This to my mind is not an ideal situation because washers can carbon up rapidly and are easily lost or damaged due to being very thin. You will need 4 of the supplied washers to cover this area and will need to speak with the RFD who sold you your CTR/TAC A1 and they will be supplied FOC by GMK. The solution was to have precision made SS washers which act as a spacer to cover the area of the barrel which ought to have been properly undercut. They met with representatives of Tikka and on their return, promised to sort the issue for all UK customers who have CTR/TAC A1 rifles which may be affected. They aimed to rectify things for the UK market quickly, and hats off to them, they have delivered on their promise. GMKs response to this was fair and swift. This issue does not affect everyone concerned because many use mods with a bore large for calibre, ie 30 cal mods on a 6.5, plus some manufacturers (like Stallon) sell mods which cover a range of cals, so for a 6.5, their cal is labelled as "up to 30 cal". It has nothing to do with the use of correct for cal mods and long bullets, and everything to do with mods being pulled off axis when tightened. Consequently, as in my case, some mods may not square up properly at the end of the thread and this pulls the mod off centre at the muzzle end, so causing the bullet to strike the inside of the mod. Interestingly, the muzzle brake supplied with the 6.5 rifle is actually a 30 cal muzzle break, so I see Tikka's response as a cop-out for not doing the job properly in the first place and I have lost trust in the brand over this issue. ![]() There's an issue which affects some CTR and some TAC A1 rifles whereby the threads have no been undercut as according to Tikka "they were designed for use with a clamped muzzle brake and do not require an undercut". Just an update for anyone who has experienced issues using exact for cal mods on TAC A1s: ![]()
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