Gas jet size for SCAR-16/FS2000

TrueBlue711 · November 7, 2019, 11:43 AM

I just replaced my SCAR-17's gas jet screw with a slightly smaller diameter one (factory was 1.45mm and replaced with 1.4mm). It made me think about my FS2000, which has the same gas system as both the SCAR-17 and SCAR-16. Has anybody played around with their gas jet screws on their SCAR-16 (or FS2000 or any other 5.56 where you can swap out your gas jet screw)? Factory size on it is 1.35mm and I'm assuming the FS2000 is the same since it's also 5.56. I'm thinking about reducing it down to 1.25mm to make it less gassy from suppressed shooting, but was hoping to see if anybody else has data before I buy the new gas jet screw(s).

EDIT: So I was wrong in my assumption. I took out the FS2000 gas jet screw last night and the hole was MUCH larger than 1.35mm. Probably closer to 2mm. I may just use the old SCAR-17 gas jet screw (1.45mm) as an initial test and see how that functions.

November 7, 2019, 11:43 AM	#1
TrueBlue711 Senior Member Join Date: March 16, 2011 Posts: 489	Gas jet size for SCAR-16/FS2000 I just replaced my SCAR-17's gas jet screw with a slightly smaller diameter one (factory was 1.45mm and replaced with 1.4mm). It made me think about my FS2000, which has the same gas system as both the SCAR-17 and SCAR-16. Has anybody played around with their gas jet screws on their SCAR-16 (or FS2000 or any other 5.56 where you can swap out your gas jet screw)? Factory size on it is 1.35mm and I'm assuming the FS2000 is the same since it's also 5.56. I'm thinking about reducing it down to 1.25mm to make it less gassy from suppressed shooting, but was hoping to see if anybody else has data before I buy the new gas jet screw(s). EDIT: So I was wrong in my assumption. I took out the FS2000 gas jet screw last night and the hole was MUCH larger than 1.35mm. Probably closer to 2mm. I may just use the old SCAR-17 gas jet screw (1.45mm) as an initial test and see how that functions. Last edited by TrueBlue711; November 8, 2019 at 12:53 PM.