I don't get why people keep asking for this other than feeling like they were promised when they weren't, it would make it take at least three times as long to kill someone with it at range. You just know the spread would be tight enough for no-scoping anyway, so people would just no-scope to kill faster. It would make a new skill gap without raising the skill ceiling and piss off a lot of average players.

: How's this for a Forerunner sidearm: Remember the Siren's ability in
: Borderlands 2? She immobilizes an enemy and levitates them over the
: ground. Give me that ability in a weapon the size of a pistol, and it'll
: be the perfect open-ended tactical weapon. With this gun, I can rip a
: troublesome enemy out of cover and whale on him without danger of evasion
: or return fire, or I can leave him be and concentrate on other enemies.
: Halo could use that.

That's really not Halo's style (although that doesn't seem to be stopping anyone), and there are a ton of ways it could mess up physics-wise, and it would be the ultimate griefing gun if you can use it on allies or their vehicles or weapons.