Already have a complete upper that you want a new barrel, handguard, or other parts installed on? This is the service you need! This service is for the disassembly and reassembly of one upper, and does not include installation of new/swapped FSBs onto undrilled barrels. We will NOT attempt to install or remove any low quality parts (i.e. brandless eBay imported components, etc).
Please use our contact form or email directly at email@example.com to order this service.