Bernard Grucza added an 18-month federal prison sentence to his criminal record today.

Grucza, the former Toys R Us executive who admitted killing a co-worker, was sentenced by Chief U.S. District Judge William M. Skretny on a related gun conviction. The sentence will run during the 25-year state prison sentence handed down two weeks ago in his manslaughter case.

Grucza had previously pleaded guilty in the stabbing death of Laurence C. “Larry” Wells II, a Toys R Us assistant manager. Wells was killed last June at the chain’s store in Hamburg. Law enforcement officials have stopped short of speculating why Grucza was in the store that morning – his defense lawyer says he was there to steal – but they noted he was carrying a knife.

Grucza’s federal sentencing followed his admission that he illegally bought a .38-caliber Ruger pistol from a gun dealer in Florida. As part of his plea, Grucza agreed to pay $223,000 in restitution to his former employer.

Most of that, about $191,000, is a reflection of the high-priced electronic equipment he stole from Toys R Us stores and then sold on eBay.