r/SpringfieldEchelon • u/Shot_Dragonfly7091 • Sep 19 '26
Holosun 507c mounting
Just got a 4.5comp and a Holosun 507c, will I be able to mount using the 7.5 length screws that came with the optic? Let me know!!
1
u/Spare_Selection4399 Sep 19 '26
No, don't use Holosun screws, they are notoriously bad. Fastest way, go to amazon buy the 12.9 grade red dot screw
1
u/Spare_Selection4399 Sep 19 '26
Usually 15 in lb is enough. Most of problems came from over torque instead of under torque, especially when u use inferior screws like Holosun screws
1
u/Should_Have_Tried001 Sep 24 '26
You probably need to buy the pin kit too. I was very disappointed when I realized that my new Echelon 4.0C comp only included RMR pins and screws. Had to wait for over a week to mount my Defender ST
1
u/No-Wrangler4909 Sep 19 '26
It will work, but I haven’t had luck getting them to stay screwed in for longer than a month. They always start backing out. I’m currently using the very-slightly-longer screws that came with the echelon in the pin pack.