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16 Posts
Hi all,
I have a 2018 model of Classic Army’s M110 SASS (model AR014M) with an ECS mosfet and trigger. This is the full length M110 that comes with a quad pic-rail and the smooth outer barrel to mount the quick mount suppressor.
Even though this comes with CA’s V2.5 GB, including a non-ported bore-up compression set; I have problems making above 1.9J w/.32g (or pretty much any weight) bb’s. I have tried running between M140 - M170 spring, and have also run a few thinner spacers, and no luck. I have checked the air seal, and the air seal is tight, including the air nozzle. The goal is to have above 2.0J with .43-.48g bb’s.
I have been using CA’s CNC hop-up for M4’s, is it is a mirror image (dimensionally) to the plastic chamber that came
M4 CNC Aluminium Hop-up Chamber for Blowback Version (P507M)
I have tried an Elvish Tactical R-hopped Prometheus 407x6.03mm SS tight-bore with a Modify Soft Flathop bucking, as well as a 300x6.03mm Madbull Steelbull tight-bore with a Maple Leaf MR hop 2021 70’ bucking and Omega nub, the most that I can get is 1.9J w/.32’s and 1.8J w/.43’s (hop on to where .43’s used to be set to, or hop off).
I swapped out the 16.5 tooth piston for a Classic Army 18 tooth piston. The nozzle is the factory Classic Army 23.0mm with o-ring, I did notice that the nozzle exhaust orifice was about 3.5mm, when just about every other nozzle that I have seen is 4.0mm, so I had a friend who works with machine work bore the orifice to 4.0mm , no appreciable improvement.
The air seal and air volume is there, the spring power should be strong enough, everything seems to be the way it should but I cant seen to breach a 2.0J ceiling!
Has anyone had something similar, any solutions?
I have a 2018 model of Classic Army’s M110 SASS (model AR014M) with an ECS mosfet and trigger. This is the full length M110 that comes with a quad pic-rail and the smooth outer barrel to mount the quick mount suppressor.
Even though this comes with CA’s V2.5 GB, including a non-ported bore-up compression set; I have problems making above 1.9J w/.32g (or pretty much any weight) bb’s. I have tried running between M140 - M170 spring, and have also run a few thinner spacers, and no luck. I have checked the air seal, and the air seal is tight, including the air nozzle. The goal is to have above 2.0J with .43-.48g bb’s.
I have been using CA’s CNC hop-up for M4’s, is it is a mirror image (dimensionally) to the plastic chamber that came
M4 CNC Aluminium Hop-up Chamber for Blowback Version (P507M)
I have tried an Elvish Tactical R-hopped Prometheus 407x6.03mm SS tight-bore with a Modify Soft Flathop bucking, as well as a 300x6.03mm Madbull Steelbull tight-bore with a Maple Leaf MR hop 2021 70’ bucking and Omega nub, the most that I can get is 1.9J w/.32’s and 1.8J w/.43’s (hop on to where .43’s used to be set to, or hop off).
I swapped out the 16.5 tooth piston for a Classic Army 18 tooth piston. The nozzle is the factory Classic Army 23.0mm with o-ring, I did notice that the nozzle exhaust orifice was about 3.5mm, when just about every other nozzle that I have seen is 4.0mm, so I had a friend who works with machine work bore the orifice to 4.0mm , no appreciable improvement.
The air seal and air volume is there, the spring power should be strong enough, everything seems to be the way it should but I cant seen to breach a 2.0J ceiling!
Has anyone had something similar, any solutions?