Long time; no fettling.
Getting the MWS ready for next weekend and had a play about with some Guns Modify parts.
There is an issue where the MWS can self-adjust the hop down as it cycles. This is due to the gas key / guide part rubbing on the hop wheel. I have had this with a very worn TM one (4-5years use) and a new AngryGun one (shocker!)
Today I fitted a Guns Modify one and have put a couple of mags through it and found no loss of hop-up. Seems the little cut out at the front is deeper and wider than others.
None in stock but sign up for a reminder: https://www.fire-support.co.uk/product/guns-modify-enhanced-nozzle-reset-for-marui-mws-m4-gbb-v2
The second fettling was with the rocket valve - I was running one that I had sanded down by 0.5mm and that worked well during winter temps (sub 10DegC) but was a bit spicy now spring is here!
A full length, unmodified, one gave around 245fps, the 0.5mm shorter one around 279fps (ASG Gas, 0.32g BBs, your mileage WILL vary!)
I carefully sanded a new one down approx 0.15mm on some medium wet&dry and that tested at around 258fps at 17DegC so exactly 1J
With the mag warmed to 22DegC it was stable at 268fps so under the 276fps limit for 0.32g I am happy to run this during the summer without having to resort to very weak gas or lighter BBs.
GM do these as a pack of three so you can have a play about with the power and not have to worry about set screws self adjusting and causing issues. Take it slow and keep checking with some digital calipers ?
Available now: https://www.fire-support.co.uk/product/gun-modify-high-stability--fps-diy-valve-for-marui--gm-mws-m4-gbb-v3-nozzle-3pcs
Getting the MWS ready for next weekend and had a play about with some Guns Modify parts.
There is an issue where the MWS can self-adjust the hop down as it cycles. This is due to the gas key / guide part rubbing on the hop wheel. I have had this with a very worn TM one (4-5years use) and a new AngryGun one (shocker!)
Today I fitted a Guns Modify one and have put a couple of mags through it and found no loss of hop-up. Seems the little cut out at the front is deeper and wider than others.
None in stock but sign up for a reminder: https://www.fire-support.co.uk/product/guns-modify-enhanced-nozzle-reset-for-marui-mws-m4-gbb-v2
The second fettling was with the rocket valve - I was running one that I had sanded down by 0.5mm and that worked well during winter temps (sub 10DegC) but was a bit spicy now spring is here!
A full length, unmodified, one gave around 245fps, the 0.5mm shorter one around 279fps (ASG Gas, 0.32g BBs, your mileage WILL vary!)
I carefully sanded a new one down approx 0.15mm on some medium wet&dry and that tested at around 258fps at 17DegC so exactly 1J
With the mag warmed to 22DegC it was stable at 268fps so under the 276fps limit for 0.32g I am happy to run this during the summer without having to resort to very weak gas or lighter BBs.
GM do these as a pack of three so you can have a play about with the power and not have to worry about set screws self adjusting and causing issues. Take it slow and keep checking with some digital calipers ?
Available now: https://www.fire-support.co.uk/product/gun-modify-high-stability--fps-diy-valve-for-marui--gm-mws-m4-gbb-v3-nozzle-3pcs