Our December Builder Set features an M4E1 Threaded set with an ATLAS S-ONE Handguard and M4E1 Lower Receiver with an Arctic Camo finish. These sets are hand finished by Blown Deadline.This package deal includes the finished pieces you need to assemble your own Arctic Camo M4E1 Rifle, including an M4E1 Threaded Upper Receiver, M4E1 Lower Receiver (first time included in a Builder Set) and an ATLAS S-ONE Handguard of choice all finished in custom Arctic Camo. Stand out at the range with a unique and eye catching build. This is a one time offer for this finish – once they are gone, they are gone!Includes:M4E1 Threaded Upper Receiver finished in Arctic Camo. Upper receiver is assembled and includes the forward assist, dust cover and barrel nut.15″ ATLAS S-ONE KeyMod or M-LOK Handguard finished in Arctic Camo (Mounting Kit Included)M4E1 Lower Receiver finished in Arctic CamoFinish this build off with a matching stock, grip and magazine! These accessory pieces are available in a very limited quantity.Magpul CTR Stock and MOE Grip in Arctic CamoMagpul STR Stock and MOE Grip in Arctic CamoMagpul PRS Stock and MOE Grip in Arctic CamoMagpul PMAG(R) 30-round Non-Window M2 in Arctic CamoThis December Builder Set is also available in an M4E1 (AR15) Enhanced or M5E1 (.308) Enhanced configuration.Please note – These parts are individually hand finished. Although the same design and coating process is used, there may be variations between sets.