Gotcha, amigo--not trying to be argumentative, though it's easy for me to come off that way even without intent. Mind pointing out what they are, for us of Weak Google-Fu? :)
Second one, that muzzle brake looks almost identical to PL-01... then again, muzzle brakes don't mean much, look at the Leopard 2 vs. M1A1/A2 even though they use almost the exact same gun. LOL