Congressional Budget Office Cost Estimate: H.R. 613: Lieutenant Osvaldo Albarati Correctional Officer Self-Protection Act of 2017 [open pdf - 14KB]
"H.R. 613 would require the Bureau of Prisons (BOP) to either provide its law enforcement officers with a secure storage area outside of federal penal and correctional institutions to store firearms or permit storage in a BOP-approved lock box within officers' vehicles. The bill also would allow BOP officers to carry concealed firearms outside of the secure perimeter of the institution where they work. Based on information from the Department of Justice, CBO [Congressional Budget Office] estimates that implementing H.R. 613 would have a negligible cost because BOP would probably opt to have the officers store their firearms in a lockbox within their vehicles. Enacting H.R. 613 would not affect direct spending or revenues; therefore, pay-as-you-go procedures do not apply. CBO estimates that enacting H.R. 613 would not increase net direct spending or on-budget deficits in any of the four consecutive 10-year periods beginning in 2028."
Congressional Budget Office: https://www.cbo.gov