Posted 10 June 2009 - 02:16 PM
I think you are confusing "Muzzle break" with a sound suppressor. They are not the same.
The top two in your link are flash hiders, the bottom two are suppressor-esque. Note to the buyer though...unless it costs $200+ AND comes with Class III weapons certificate...it's not a real suppressor [which it isn't] and therefore will NOT act like a true suppressor.
A muzzle break is actually a "flash" suppressor [aka flash hider], which looks like a tip with flutes or petals cut into it. This does nothing to muffle sound...or at least, it's not designed to.
A sound suppressor does just that...muffles the report.
The two products are completely different in design.
They are all "muzzle attachments" because they fit onto the muzzle of a barrel but their functions are totally different.
Now as a general rule, a barrel [tip] with the most amount of porting will be most quiet but may also detract from efficiency.
A barrel with the least amount of porting is most efficient but is also the loudest.
If you are looking at a balance between them, pick one with a little bit of porting at the tip. If I had to choose for myself, using your criteria, I'd choose the Vortex. The cuts in the tip appear to be more slender than the top one but are a bit longer overall. The top one just has huge vents all the way around it, pulling away from the "efficiency" part you are looking for.
The two bottom ones are nothing more than solid barrel extensions, making absolutely no difference in sound. They'd probably be the most efficient of all the tips offered but that's it.....HOWEVER....nothing is more efficient than 'barrel only' [meaning no extensions] and may find that more to your liking. Adding length might cause drag on the ball as it exits the barrel, taking away from the efficiency you seek.
Warped A5; M98
; 68 Magnum w/ AGD 6-Pack
, Automaggot #92 Custom Modder #5"Political correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."
I got my OWN smiley...