For the first time, the FBI is revealing the murder weapon, and specifically asking the gun community for help.

Gun collectors got a surprise when they opened this month's edition of 'Gun News' -- finding a two-page spread asking for their help in solving the murder of Assistant U.S. attorney Tom Wales.

"This is basically a public service provided by our organization 'cause it is in all our interest to resolve this issue," says Joe Waldron. He runs The Washington Arms Collectors, a nonprofit that promotes collecting and shooting firearms.

It also publishes 'Gun News.'

It's ironic that the FBI and 'Gun News' would team together, because: "One of the categories of people they were pointing fingers at right after the assassination was gun owners because of Wale's association with Washington Cease Fire [a high-profile gun-control group]. I don't believe that to be the case," says Waldron.

But, the focus seems to have shifted away from gun collectors.

The Seattle Times has reported that a former pilot Wales prosecuted is the primary suspect. The FBI won't comment.

"I have worked with Mr. Wales as a lobbyist in Olympia I disagreed with Mr. Wales on a number of issues, but no one has the right to kill an individual," says Waldron.

Also revealing in the federal plea; the murder weapon. More than a year ago, Dave Workman, Senior Editor at 'Gun Week' reported the FBI was looking for Makarov pistols. The FBI wouldn't comment.

Now in a full-page ad, the FBI confirms it's looking for Makarov semi automatic pistols fitted with aftermarket barrels.

"We know it's a tough case, we're just pleased that they're working hard," says Barry Shaw, President of Washington Cease Fire. Shaw and Tom Wales were co-Presidents at Washington Cease Fire.

"There is strength and energy still behind Tom's memory that makes people want to find the murderer, 'cause Tom was such a great man," says Shaw.

Tom Wales was gunned down in his own home. He was on the computer, working in his basement office. Someone shot through the window.

"I know one day, they'll get the clue or piece of evidence they need to break the case and they'll bring Thomas' murderer to justice," says Shaw.

Nearly three years after his death, Tom Wales friends are just happy to know the case has not been forgotten.

The FBI tells KOMO 4 News there might be more ads in other gun publications.

The FBI is offering $1 million reward for information leading to the arrest and conviction of the person who killed Tom Wales.

If you have any tips, you're asked to contact the Seattle FBI office, or visit seattle.fbi.gov