Yes this is a TM MWS system HK416D GBBR . I am selling this ultimate 416 GBBR to save up for another build. It is based on the TM MWS system, converted to an HK416D with the MWC( model work customs) 416D kit, and the internals is fully upgraded. I only used this GBBR once for an indoor game. The BCG is also upgraded to an HK style steel BCG (Pic #4), which is even lighter than the original one so that it won't slow down the ROF. The original aluminum BCG will be included in the package as well. The MWC 416D kit is CNC machined with 6061 Aluminum in real steel spec, with all the correct markings. And in my opinion, the TM MWS is the most reliable and accurate GBBR system with the best gas efficiency on the market, which is perfect for cold seasons in Canada. Asking for 1700cad shipping included. You will realize this is an extremely reasonable price if you know how much all these cost. Only a TM MWS m4a1 is about 800CAD and the 416D kit is 1100USD. The price includes 8 gas mags but does not include the optics/flashlights in the pics. Please let me know if you have any questions. Parts list: Tokyo Marui M4A1 MWS GBB ( ZET System ) MWC CNC 416D G-SMR (Black) kit for MWS GBB MWC CNC nozzle valve (380FPS with.20g BBs) MWC CNC lightweight steel bolt stop plate MWC CNC Steel HK-style BCG AngryGun G-style charging handle for MWS Laylax hopup robber Laylax 6.03mm inner barrel Gunsmodify CNC Steel trigger/hammer/sear set Tokyo Marui 35rds Gas Magazine MWS x 3 Prowin 50rds Gas Magzine for Tokyo Marui MWS x 3 IRON 35rds Pmag for MWS x 2