We need to make allowances for English commentary on firearms. After all, they are well into the third generation of their official eeeekagun stance. Would you ask your great grandpa to analyze this week's Billboard Hot Rock Top 40?
Nevertheless. Reuters is competing for a most-errors-per-line award in story on slow sales of modified AR15-types in New York.
--The two main modifications to the AR 15 rifles are the lack of a muzzle brake, which controls the rapid fire of bullets, Full fail, there, Fleet Street, and a silly one at that. It tends to help control felt recoil and muzzle jump. And you probably don't really mean "rapid fire of bullets" anyway. You're groping for the term "rate of fire," I suppose.
--and a flash hider, or suppressor, which limits the flash of light coming out of the barrel, Kielbasa said. The suppressor allowed night-time shooters to obscure their location by masking the "flash" of light.
A couple of problems there, Cyril. You get a little slack on the use of "suppressor" because in comman usage it is sometimes used to designate the flash hider. Just as often it is a synonym for "silencer." The greater sin is reporting its purpose to be obscuring the location of the rifle. It hangs out there mostly to shield the shooter's eye from a bright flash which might, at night, disrupt his subsequent-shot aim.
By the way, the Mr. Kielbasa quoted is the gun shop owner in New York. He said new state laws regulating rifle cosmetics might force him to quit selling them altogether, That would a vurst-case scenario.