JG works SIG 551 spring upgrade

21

Says it is not threaded, there was a threaded and unthreaded version.

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22

mines the threaded version

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my question now is what size is the outer barrel?

I thought it was 14mm but I canā€™t get the acetech bifrost to screw on, Iā€™m trying without the adaptor that came with it as itā€™s 14mm going into the bifrost and 11mm out.

Iā€™m assuming itā€™s 15mm outer barrel on the sig 551. it appears to be the same size but I just cant get the bifrost to screw on

any help would be much appreciated

23

The sig 550, and 551 are 14mmā€¦ but they are 14mm clockwise.
I thought that 552 is 14mm ccw.
Donā€™t know why they did this.

25

Clockwise is righty righty, lefty loosey.
Counter clockwise is righty loosey, lefty righty.

So you canā€™t put a clockwise on a counter clockwise.

27

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ordered one of these,

will have to wait quite a while to receive. hopefully does the trick

if not Iā€™ll probably throw the bifrost against the brick wall outside

28

update: works on my JG aug a3, no adaptor required

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29

Knew I had seen them somewhereā€¦ lehui vectors and augs had the same 14mm cw threads, I never ordered one though just 3d printed my own flash hider hopups to work in mirror so they were cw not ccw.

The things you have to do for gel blasters sometimes!

30

Yeah, I never understood why LeHui went with 14mm CW on their Vectorsā€¦ and 10mm on their inner barrels :thinking:

I usually chop and graft a 14mm CCW thread onto themā€¦ but then Iā€™ve done that to lots of my blasters.