M-16 Blank Adapter (BFA), NSN 1005-00-118-6192, Red M-16 Series Blank Adapter (BFA) Genuine USGI Issue item that is in worldwide use by U.S. forces. The BFA's exact nomenclature is "M15A2" but it is designed for the M16A1, M16A2, M16A3, and M16A4. (The M4 has a different BFA, which is yellow in color.) NOT a cheap imported substitute. Beware imitation BFA's that could cause catastrophic failure and serious injuries. Made in USA NSN: 1005-00-118-6192 You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!