On-gun lights/laser legal in MA?

[Loyalist]

Looking to purchase an on-gun light/laser like the Sig Sauer STL-900L and wondering if there are any Massachusetts legal issues to be aware of? Is something like this legal in MA?

 

[EddieCoyle]

No problems, just don't hunt with it.

 

[Gooman24]

No problems, just don't hunt with it.

Two legged stuff is ok.

Also look at surefires weapon light(it has a laser). IMO no one makes anything better.