I have an 18" LWRC REPR, I have had it for a while, it came with the 16"bbl to start, when I first shot it with an optic I could not get groups under 2", it went back to the factory, and I asked them to look it over, they confirmed the issue and were going to change the bbl, I asked for an 18", they did it for me, as I have been shooting the accuracy has been degrading in time, I have less than 600 rnds on it, so back to the factory it went, they shot it on 2 different occasions,with match ammo, the groups from the factory were as follows, largest 1.350, smallest 1.170 @100 yrds this was factory acceptable.... well I am sorry, no its not ,REPR stands for Rapid Engagement Precision Rifle, they were using a 5x20 Trijicon Accupoint in a larue mount, also it had a Giesslle Adjustable DMR trigger, I just expected more from this rifle, and was disappointed....I also paid $75 for them to tell me this, I could not get the rifle to shoot under 2 MOA, after I got it back the groups shrunk a bit, but not near what they should be..it should be called REBR, Rapid engagement BATTLE Rifle.. But I guess REPR sounds cooler, I will add LWRC customer service is SECOND TO NONE! they do take the time, and answer the phones and try to fix your issues.....