Home / Accessory-Lowers / Franklin Armory BFSIII M4-BLR LOWER SBM4 # View cart “Bushmaster BFSIII BUILT LOWER RECEIVER” has been added to your cart. Sale! Franklin Armory BFSIII M4-BLR LOWER SBM4 #$52499 $51924 Out of stock SKU: 00-30007-BLK Category: Accessory-Lowers Product ID: 28719 Description Description Binary Trigger EquippedSpecialized Tension ScrewSBM4 Brace Related products Sale! Bushmaster A2 BUILT LOWER RECEIVER $33995 $33044 Sale! Warrior Systems WSM15 BILLET LOWER BLACK $29900 $22259 Sale! Wilson Combat RECEIVER SET AR-15 FORGED $26995 $24830 Sale! Wilson Combat RECEIVER SET AR-15 BILLET $48995 $44111