I also have a hammer .510. Not the carbine, the original. I've had it about 4 years? Or three? Can't remember exactly, the first couple of years I had it I lived in Las Vegas. I'm a felon, and certain places are not airgun friendly anyways, especially if the thing sounds like a .30 caliber powder burner. I also recently bought the donny FL adapter, with a muzzle break from texomaprecisionpellets, and I'm looking forward to shooting it with the break. From my understanding airgun silencers are just like the real thing in one respect: it's not like the movies. Unless you make your own with some steel wool and baby bottle nipples all spaced out in a tube, it isn't going to work. Donny FL stopped selling online, from what I read on their site awhile back, because they are sub-contracting out all their sales to other companies, like pyramid, newenglandairguns.com, etc. New England and Texoma Precision are my favorites. Customer service is epic with both of them, and you actually get the item you pay for, unlike some of the scam sites around. I can vouch for those two's authenticity. (Needed to be said these days, unfortunately). as far as shooting on public land, I can't speak on MA, but i am 100% positive the national forests will allow it and BLM land as well. probably not state land tho is what they most likely meant. the state can't speak on federal land regs anyhow, they don't enforce those. so they may not know what they are talking about. DOUBLE CHECK before assuming, as with anything when you're a felon. some states would say the hammer is a firearm. new jersey, my understanding is you have to buy bb guns at a gun store. south Dakota (or north, can't remember for a 100%, but one of them) treats air rifles as real firearms for felons. which is stupid. I literally didn't air mine up or load it until I was on federal land in oregon, but Nevada recently passed a law where a felon with a pcp is felon in possession of a firearm. it is getting ridiculous and I for one can't stand the fact that legislators pass laws and don't give citizens the opportunity to vote during that session. They make their own without our say. the only ones they let people vote on in oregon is what they call Public Domain ballots or elections. It was on the last mail in ballot I got. Why aren't we allowed our say on these things anymore? as far as silencers the US Fedeal Court Of Appeals overturned this dudes case on a airgun silencer conviction, and made it clear that it is INTENT of the person possessing it. if you have a bunch of gun parts and a "airgun" silencer, cmon, you're not fooling anyone. But if you have one on a legally owned Hammer, or other airgun, legally they aren't pursuing those. by the letter of the law and the ruling handed down by the court they can't. But with as many things as they are taking away from people these days, EVERYONE needs to start signing petitions online and get anything stupid these people pass back to normal. just because some kid in a big city decides it would be cool to shoot some one with a paintball gun, doesn't mean that as a felon I am anything like they are. I understand why I can't have a pistol. I get it. but an air rifle?