Maryland held a statewide gun turn-in for the first time Saturday, and in Montgomery County people dropped off rifles, handguns and shotguns as well as a hand grenade and a sword, authorities said.

On average, about 100 rounds of ammunition was turned in for each of the 69 handguns, 27 rifles and 15 shotguns accepted in Montgomery.

“Our goal is to provide a simple means for families to make their homes and communities safer,” state Attorney General Douglas F. Gansler said in a statement. It said turn-in sites had been set up in 20 of the state’s 24 jurisdictions.

Turn-ins have been held in a variety of individual jurisdictions over the years, but may have gained popularity in reaction to recent mass killings.

At many past events, guns were exchanged for cash. Gansler promised no cash, but in Montgomery, police said that for each gun collected, organizers would make a donation to the shock trauma center at the University of Maryland Medical Center.