5 . 56 7 . 5 inch barrels sacrifice a lot of velocity for compactness . I haven ' t heard of any issues with them , my 7 . 5 Rainier Arms barrel has been running flawlessly . It ' s a lot of fun to shoot and it ' s not my HD rifle . I see these barrels as more of a niche than anything . You should have no issues with your 300 blk , that round was specifically designed for short barrels . <| sep |> I get more than that many times just for popping the cap off of a bottle . <| sep |> Advanced movement is definitely making the game way easier for us rushers . We ' ve always jumped around corners , dropshotted , and did everything we can to avoid getting shot at while constantly moving just to make us unpredictable and a harder target to hit . The defensive players had an equal opportunity in these games because they could hear footsteps better and hold control over certain areas since engagements were mostly grounded which means you only have to worry about what ' s going on in half your screen . Now we just end up wallrunning the second floor over your head , flying through the second floor window , jumping left and right while in the air as we drop around a corner , heck we even end up sliding past the corner and catch you off guard . AWBO 3 IW is a rushers game . Even though I ' m a rusher and enjoy sharpening my aim and reaction time in the mess of engagements I throw myself into , I also enjoyed CoD Ghosts in that I had to play it smarter as I rush . More peeking , more trying to outsmart an enemy running past a doorway where I see them at my peripheral but pretend not to , tripping a claymore on purpose to try to lure them out . You just don ' t really get those moments as much in advanced movement games where everything moves in a blur , and if you don ' t swim with the wave then you end up getting a wave of spawned enemies suddenly rushing your back .