Guarder Light Weight Nozzle Housing for HI-CAPA 5.1/4.3 Airsoft GBB Pistols

"I was kind of sketched out buying this with no real in depth reviews that I could find. I was actually surprised, the fit is absolutely perfect on a stock 4.3 slide. The included nozzle spring I estimate about 140%- 150% and feeds amazing. This paired with a stock TM nozzle and piston head will create almost no recoil on a stock slide. I haven't tested fps variance yet but I will add it later compared to the original TM which had a variance of -1 fps