Hi, the trigger on my MPR is still set as it was from the factory and is a little heavier than I would like it to be, as I am using it for FT, could anyone give me any tips on which screws to adjust to lighten it a little without having to change or cut any springs.
As far as I know there's one screw by the trigger guard which is the weight of pull? And the two on the trigger are the 1st and second stage.
I like the feel of the stages as they are, I would just like the second stage lighter, so should I adjust the weight of pull screw or the second stage.
There is a fantastic guide on adjusting the s200 trigger by "timminder" I think,
Is there anything else on here for the s400/MPR?
MPR Trigger Adjustment
- Stoohundred
- Posts: 122
- Joined: Mon Oct 19, 2015 9:48 am
MPR Trigger Adjustment
AA MPR FT .177 8-40x60 Tasco Custom Shop (FT Setup)
S200 MK2 .177 Robert Lane Reg Hawke Airmax 3-12x50 SF FOR SALE
S200 MK2 .177 Robert Lane Reg Hawke Airmax 3-12x50 SF FOR SALE
Re: MPR Trigger Adjustment
Assuming that the MPR is the same/similar set up to the 4/500 series you might find the below link useful. It's the one we used to have in the tech library on the old site.
http://www.shootforum.com/forum/s4x0trigger.html
http://www.shootforum.com/forum/s4x0trigger.html
AA s410K .177
BSA R10 .177 Super carbine. (Blacky)

BSA R10 .177 Super carbine. (Blacky)

- Stoohundred
- Posts: 122
- Joined: Mon Oct 19, 2015 9:48 am
Re: MPR Trigger Adjustment
Once again you produce exactly what I need, thanks again Geordie.
AA MPR FT .177 8-40x60 Tasco Custom Shop (FT Setup)
S200 MK2 .177 Robert Lane Reg Hawke Airmax 3-12x50 SF FOR SALE
S200 MK2 .177 Robert Lane Reg Hawke Airmax 3-12x50 SF FOR SALE
Re: MPR Trigger Adjustment
Stoohundred wrote:Once again you produce exactly what I need, thanks again Geordie.
My pleasure

AA s410K .177
BSA R10 .177 Super carbine. (Blacky)

BSA R10 .177 Super carbine. (Blacky)

- Stoohundred
- Posts: 122
- Joined: Mon Oct 19, 2015 9:48 am
Re: MPR Trigger Adjustment
Can't recommend this guide enough, it's transformed my gun.
Much better follow through and no "pulled" shots anymore!
I highly recommend doing the trick with a small nail/panel pin to limit the travel .
Also, any newer type s400's or mpr's like mine will have a 3 sear set up , but the set up instructions will still work all the same.
Much better follow through and no "pulled" shots anymore!
I highly recommend doing the trick with a small nail/panel pin to limit the travel .
Also, any newer type s400's or mpr's like mine will have a 3 sear set up , but the set up instructions will still work all the same.
AA MPR FT .177 8-40x60 Tasco Custom Shop (FT Setup)
S200 MK2 .177 Robert Lane Reg Hawke Airmax 3-12x50 SF FOR SALE
S200 MK2 .177 Robert Lane Reg Hawke Airmax 3-12x50 SF FOR SALE
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