Every part checked against this replica, grouped by category. The tag on each row says how well the answer is backed. Use the evidence filter to see only fits a maker or retailer has named.
G&P

MWS Steel Parts Combo SetFitsSpecs
T8

Gas M4A1 series 20-round short magazineFitsSpecs
Tokyo Marui

GBB Type 89 20-round spare short magazineDoes not fitSpecs
Tokyo Marui

GBB Type 89 series spare magazineDoes not fitSpecs
Tokyo Marui
M4A1 MWS spare magazine (35 rounds)FitsSpecs
Tokyo Marui

Enhanced Nozzle for MWSFitsSpecs
T8

Enhanced Nozzle Set V3.5 For Tokyo Marui MWSFitsSpecs
Guns Modify

MOE-K2 GripFitsRecorded
Magpul
Very good fit. Beavertail of the grip is slightly proud (designed for an AR-15 rather than MCX) but secures the spring in place.

Easi Nozzle Spring for Tokyo Marui MWS & MTR16 SeriesFitsSpecs
Jaeger Precision

MWS 140% Nozzle Return SpringFitsSpecs
Bavtac

CNC Adjustable Trigger Box (A) for TM M4A1 MWSFitsSpecs
G&P

EVO CNC Trigger Box for MWSFitsSpecs
Guns Modify

EVO Steel CNC Drop-in Trigger box for MWS systemFitsSpecs
Guns Modify

Crimson NPAS for MWS TM / DE / SalvoFitsSpecs
Waldo Dynamics

Npas AKM & AKX Tokyo Marui - Full kitDoes not fitSpecs
IBEX AIRSOFT

Jaeger Downgrade Valve For Tokyo Marui AKM & AKX GBBR (New CNC Version)Does not fitSpecs
Jaeger Precision

MWS NPAS Adjustable ValveFitsSpecs
Jaeger Precision