Because parole was abolished in the federal system by the Sentencing Reform Act of 1984, it seems likely your friend is either on pretrial release, post-incarceration supervised release, or probation. If your friend is on pretrial release they should call their current attorney. If they are on probation or supervised release, then they should contact their prior district court attorney, who will not have difficulty reaching the probation officer on their behalf.See question
Under 18 U.S.C. 924(a)(2), the statutory maximum sentence for a violation of 18 U.S.C. 922(g)(1) is normally not more than 10 years and a $250,000 fine (or both). If the defendant qualifies for sentencing under 18 U.S.C. 924(e), as an Armed Career Criminal, then the mandatory minimum sentence is 15 years, the statutory maximum is life in prison, plus a $250,000 fine or both. If the defendant was on federal supervised release, there could be a separate (and often consecutive) sentence based on violation of the terms of supervised release.See question
If the 24 months sentence was given in federal court, the Bureau of Prisons (BOP) will calculate his actual sentence upon imprisonment. Generally, inmates receive a 15% reduction for good behavior and a day-for-day reduction for their pretrial time served in federal custody on the charge of conviction or related charges, i.e,, charges that are apart of the "relevant conduct." Other specific reduction, such as successful completion of the RDAP Program and a Rule 35 Motion can further reduce the federal sentence.See question
Though many federal inmates, or those awaiting trial on federal charges, repeatedly hear that there is a law about to pass (or a law that just passed) reducing a federal inmate's time to 65% of the sentence announced in-court at the sentencing hearing, this is false. No such bill has recently been passed and it is highly unlikely that any such legislation will be enacted soon.
An inmate's time is determined by the Bureau of Prisons (BOP) upon imprisonment and is only reduced for a few - very specific - reasons, like a Rule 35 motion or successful completion of the RDAP Program.See question