Home / Accessory-Lowers / Bushmaster M4 BUILT LOWER RECEIVER View cart “Bushmaster BFSIII BUILT LOWER RECEIVER” has been added to your cart. Bushmaster M4 BUILT LOWER RECEIVER$27795 Out of stock SKU: 00-20005-BLK Category: Accessory-Lowers Product ID: 58418 Description Description Related products Sale! Warrior Systems WSM15 BILLET RECEIVER SET BLK $47900 Original price was: $47900.$37202Current price is: $37202. Sale! Wilson Combat RECEIVER SET AR-15 BILLET $48995 Original price was: $48995.$44111Current price is: $44111. Sale! Bushmaster BFSIII BUILT LOWER RECEIVER $59395 Original price was: $59395.$56913Current price is: $56913. Sale! SilencerCo LOWER RECEIVER SCO15 $26900 Original price was: $26900.$26718Current price is: $26718.