Catalogue#178700

HK MR556A4 Upper Receiver Kit
★ 5.0 (1)
$2441.39Spec

TacFire BU-556-10 is a complete AR-Platform upper assembly built around a 10-inch 5.56x45mm NATO barrel with a black nitride finish. It mates to a black anodized receiver and uses an M-LOK handguard for flexible accessory mounting.
A compact 10-inch TacFire upper with an M-LOK front end for modular setups.







