Monstrum M3 Red Dot Screw Kit | Compatible with RMSc/Holosun 407k/507k/SCS/EPS Carry Red Dots and Optics Ready Sig Sauer P365
Original price was: $19.99.$12.95Current price is: $12.95.
Price: $19.99 - $12.95
(as of Sep 22, 2025 03:52:33 UTC – Details)
Product description
M3 Screws
Monstrum Red Dot Screw Kit
The Monstrum M3 Red Dot Screw Kit includes an assortment of M3 screws – for mounting your preferred red dot to your optics ready Sig Sauer P365. Recommended torque of 15 inch-pounds
M3 in 6mm length
M3 in 8mm length
M3 in 10mm length
M3 in 12mm length
Compatible with optics ready Sig Sauer P365
Compatible with optics ready RMSc Cut (including Holosun 407k/507k/SCS/EPS/EPS Carry) Sig P365 models including P365, P365XL, P365 XMACRO, and TACOPS
1 Hardened Stainless Steel
2 Threadlocker
1 Zinc Plating
2 Torx Head
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Customer Reviews
4.6 out of 5 stars 49
4.5 out of 5 stars 143
4.6 out of 5 stars 57
4.7 out of 5 stars 39
4.3 out of 5 stars 48
4.3 out of 5 stars 26
Price
$12.95$12.95
$16.99$16.99
$14.99$14.99
$14.99$14.99
$14.99$14.99
$14.99$14.99
Hardened Stainless Steel:
✔
✔
✔
✔
✔
✔
Blue Treadlocker:
✔
✔
✔
✔
✔
✔
Zinc Plating:
✔
✔
✔
✔
✔
✔
Torx Head:
✔
✔
✔
✔
✔
✔
Compatibility:
opt. ready Sig Sauer P365 etc.
Various Platform
Glock 17/19/26/Brownell’s etc.
Glock 43X/48 MOS/Hellcat etc.
RMR/Holosun 507C/407C/508T X2
Glock 17/19/26/34 MOS and S&W
The Monstrum M3 Red Dot Screw Kit includes an assortment of M3 screws – for mounting your preferred red dot to your optics ready Sig Sauer P365.
Compatible with optics ready RMSc Cut (including Holosun 407k/507k/SCS/EPS/EPS Carry) Sig P365 models including P365, P365XL, P365 XMACRO, and TACOPS.
The M3 screw kit includes multiple lengths of screws for compatibility across different makes of red dots. Includes three each of the following M3 pattern screws: 6mm, 8mm, 10mm, 12mm
Red dot hardware is crafted from stainless steel and uses Torx T10 heads to prevent stripping. Recommended torque of 15 inch-pounds. Three screws of each type are included, providing a spare for lost or damaged screws. Screws come with blue loctite for secure mounting.
All Monstrum products are backed by a lifetime guarantee
8 reviews for Monstrum M3 Red Dot Screw Kit | Compatible with RMSc/Holosun 407k/507k/SCS/EPS Carry Red Dots and Optics Ready Sig Sauer P365
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Original price was: $19.99.$12.95Current price is: $12.95.
Jules –
Metric screws
Product is excellent and the shipping was fantastic I never had such fast shipping as this one. 5 stars plus. Thank you!!!
Karl M. Pfamatter –
Great product
Fits perfectly
William H. –
Different size for any fire arms.
Great!!!Sig p365 xl – Removed factory reddot and ordered blank cover and it came without screws. Ordered screws pact work out great.The order was delivered fast.
Stephen Hopkins –
Well machined. Blue loctite pre-applied
Well machined. Blue loctite pre-applied.
Racing Geisha –
Perfect set!
Super convenient to have so many sizes together! Packaged nicely and each size screw comes in its own labeled bag to keep things organized. Use M3x10 for mounting Holosun 407k to p365 and xmacro
Rich G –
Nice Replacements
Great extra screws to have for any sight to put on a variety of optics.
InExcelsis –
Great kit never have to worry about whether I have the right screws for a given sight or not anymore
Perfect set of varying screws for pistol optic mounting as I have a variety of makes and models of pistol sights this screw kit has made making sure I have a compatible set of screws to mount whatever sight I am trying to mount will be doable and straight forward no grinding down screws or ordering one set at a time just a nice variety of length options exactly what I was looking for thank you again Monstrum I highly recommend this kit to others who have a variety of pistol sights with different screw requirements 5 stars.
Tyler N. –
Did not hold
I installed these screws on my holosun w/ my MP 2.0.The screws backed out. Whatever thread lock is applied to the end of these is not strong enough. I would recommend using an actual threadlocker.