SRU SCAR-L 3D Printer Bullpup Carbine Kit for WE-Tech Mk16 / SCAR-L Gas Blowback Airsoft Rifles
(Color: OD Green)

"This is a really nice conversion kit. It takes advantage of the SCAR'S natural ambidextrous mag release and is very nice and compact. the only downside to this is that the scar feels a bit cheap with a plastic conversion

"Trigger bar assembly is poorly designed with thin linkages and sharp angles that create stress concentration which are amplified by how hard you need to pull the mushy trigger. Take a wild guess which part broke in my kit after a couple games. I ended up redesigning a reinforced linkage with revised angles for more reliable trigger pulls as SRU support has yet to respond to my emails inquiries regarding replacement parts.

If you really want a bullpup scar, go for the TM one. The trigger will still suck but at least you get a more complete kit compared to the WeTech version - still a ripoff since its all just FDM printed PLA+PC (costs $25/kg on average).