EXTERNAL UPGRADE
-
Gemtech Trinity 9MM Silencer (US ver. is non-functional)
Model#: GT-BE-TRINITY9 -
Noveske N4 metal body
Model#: M4 Receiver Noveske N4 -
Stag Arms Stag-6.8 metal body
Model#: M4 Receiver Stag 6.8 -
Barrett Rifles REC7 6.8 metal body
Model#: M4 Receiver Barrett REC7
-
Daniel Defense DDM4 metal body
Model#: M4 Receiver DDM4 -
JP Rifles M4 metal body
Model#: M4 Receiver JP Rifles -
PWS M4 metal body
Model#: M4 Receiver PWS M4 -
Gemtech M4 metal body
Model#: M4 Receiver Gemtech M4
-
Double Star M4 metal body
Model#: M4 Receiver Double Star -
Daniel Defense Low Profile Gas Block
Model#: DD-GB -
Noveske Rifleworks Gas Block
Model#: NV-GB-ND -
Noveske Rifleworks Adjustable Gas Block
Model#: NV-GB
