I made this simple bubble level for my FX Impact M3. It is a small piece of 3D printed plastic that will snug fit on the rail behind the picatinny scope rail. A cheap bubble level from Amazon was super glued on top of the 3D printed mount. The mount will fit snug on the rail, and since I shoot on the bench it is not a problem. If you carry your M3 around, it could get knocked off. A piece of the removable 3M double sided tape will secure it nicely if needed.
This is NOT a high quality CAD designed bubble level. But if you want one for your M3 I can send you the 3D file (use PTEG filament). I may be willing to print some up and send them if people are in a jam and cant get access to a 3D printer.
This is the bubble level I used from Amazon
https://www.amazon.com/Measuring-Balancing-Turntable-Phonograph-10x10x29mm/dp/B098CWYPZC/ref=sr_1_2?dchild=1&keywords=8Pcs%2BSmall%2BBubble%2BSpirit%2BLevel%2B32x7mm&qid=1635394823&qsid=140-7231019-2839542&sr=8-2&sres=B098CWYPZC%2CB098DYR3MH%2CB00EC8MW5C%2CB07VTBDZ9N%2CB01N704G45%2CB0987D4KR2%2CB07F25SCQ2%2CB07VP4Q9KF%2CB07VTQG17V%2CB08ZS4BDYW%2CB07RKK22BF%2CB08CH9K7H9%2CB07VT4P7TT%2CB08P48SBL5%2CB094NMPZZ7%2CB08L7J3XXD%2CB098D4XFJW%2CB07VSMFY9W%2CB000BYAKDM%2CB0153BGY0U&th=1
This is NOT a high quality CAD designed bubble level. But if you want one for your M3 I can send you the 3D file (use PTEG filament). I may be willing to print some up and send them if people are in a jam and cant get access to a 3D printer.
This is the bubble level I used from Amazon
https://www.amazon.com/Measuring-Balancing-Turntable-Phonograph-10x10x29mm/dp/B098CWYPZC/ref=sr_1_2?dchild=1&keywords=8Pcs%2BSmall%2BBubble%2BSpirit%2BLevel%2B32x7mm&qid=1635394823&qsid=140-7231019-2839542&sr=8-2&sres=B098CWYPZC%2CB098DYR3MH%2CB00EC8MW5C%2CB07VTBDZ9N%2CB01N704G45%2CB0987D4KR2%2CB07F25SCQ2%2CB07VP4Q9KF%2CB07VTQG17V%2CB08ZS4BDYW%2CB07RKK22BF%2CB08CH9K7H9%2CB07VT4P7TT%2CB08P48SBL5%2CB094NMPZZ7%2CB08L7J3XXD%2CB098D4XFJW%2CB07VSMFY9W%2CB000BYAKDM%2CB0153BGY0U&th=1
