Easily on par with (better than?) David Arnolds stuff, and he gets paid and you didn't...
You should shoot to be in the industry for sure, but before you do...
On the 'cover' image it read "Bullets Speak Louder THEN Words", obviously, should be THAN. Whoops

Now, about the gun barrel, someone already said it sounded 'jarring'. I think this is because it's off-key to the usual 'da da dahhh, da da dahhh' because after that bit, it sounds excellent, just like the rest of the music!
Good luck with future projects!