RA-Tech Aluminum Nozzle w/ NPAS Valve for Airsoft GBB Rifles
(Type: WE SCAR)

"I Bought this Nozzle made for the WE SCAR for my WE PDW 10/1/21, Direct Drop in Fit, no modification needed, only thing is, when you install it, make sure the NPAS isnt turned up too high or else it'll cause the nozzle to get stuck. overall amazing product that fixed my PDW

"Like the guy said above or below, this product is a must for anyone who want to use propane (not the green gas can). I used propane on the gun in normal room temperature, and the nozzle broke by itself after a few burst fire.

For the Aluminum Nozzle, I didn't use solid grease like the guy did before me, but I used high concentrated silicone oil to lube around the nozzle. One thing you really have to be careful is the ring on the spring that hooks on the carrier, because it bends very easily.

"A critical piece that will add to the longevity of the system. I replaced my open bolt with this aluminum nozzle because it is less prone to breaking, cracking, etc. The NPAS is also a great touch, because i was able to fine tune my fps to meet the limit. Just make sure to slather one lots of SOLID grease, and not just standard silicone oil from a can or so. The gas from the system will blow it all out, so this is the best way to keep it lubed.

Overall, it's a good piece, but installing it can be tricky. If you're not careful, you can easily mess up the ring on the return spring when reinstalling the pin to hold it in place on the bolt. Though, that's just a design flaw on WE, I believe.