
Yes you can, lol. A good silencer muffles the shot of a gun, reduces recoil, and gets rid of muzzle flash. Good silencers don't slow down a bullet, or decrease accuracy. If you want to to be as close to silence as possible, you need to buy special sub sonic ammo, this stuff gets rid of the sonic boom, but decrease range and power.
The .50 cal's velocity is 2900fps.
The m4's velocity is 3250fps. But people accept that a M4 can be silenced but not a .50 cal.
All good silencers work the same. So if you can make a silencer for a M4, which is a .223 caliber, why not make a bigger version for the .50. Nothing is imposible, you can silence a shotgun if you want to.