The National Comprehensive Cancer Network (NCCN) just released updated breast, ovarian, and pancreatic cancer guidelines which included updated breast cancer screening recommendations for male BRCA carriers (particularly male BRCA2 carriers). It is now recommended that male BRCA carriers consider annual mammograms starting at age 50 or 10 years before the earliest male breast cancer in the family (whichever comes first).
You can check out the full guidelines by creating a FREE account at: https://www.nccn.org/professionals/physician_gls/pdf/genetics_bop.pdf