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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
Fernando
Reviewed in the United States on May 9, 2025
I picked up this Monstrum M3 Red Dot Screw Kit for mounting a Holosun 507k on my Sig P365, and it worked perfectly. The screws were the exact fit — no guessing, no modifications needed, and the included options made it easy to get the right length and thread pitch. Everything was clearly labeled, and the quality of the hardware feels solid.If you're trying to mount a red dot like the RMSc or Holosun series to an optics-ready P365, this kit takes the guesswork out of the process. It’s such a small thing, but having the right screws can make or break a clean install, and I’m glad I didn’t have to hunt around at the hardware store or risk stripping anything.Highly recommend this if you're doing a red dot upgrade — it’s inexpensive peace of mind.
Guest Family
Reviewed in the United States on May 8, 2025
These screws worked great to put the optic on my P365XL. It's nice that there are different lengths to use depending on what optic you go with, but it's a pretty expensive way to buy two screws. Thread locker is pre-applied, so I hope the optic stays put.
Captain Repurpose
Reviewed in the United States on May 27, 2025
I know they claim these are specifically for certain dot/firearm combinations. The reality is, you need a stock of fasteners, of a quality you know and in an array of useful sizes, to mount anything to anything in the firearms optics world. For me, I throw out whatever comes with an optic and use known fasteners. Rated at 15 inlbs, I have used these in installations calling for 18 inlbs, and they have been perfect.
Kiera O
Reviewed in the United States on May 25, 2025
These are exactly what they should be - nicely finished, of good quality, and they already have thread locker applied. Each length comes in its own individual baggie that's clearly labeled with all the dimensions and specs, not just length, which is great for when you use the ones you need at the moment and throw the rest in a drawer. It's nice that they include three, so you have an extra if you lose or damage one. I used the 10mms with a P365 and a Holosun 507k, and they worked perfectly. I'm glad to have the other lengths on hand in case I switch optics in the future. If you need screws for your P365 or anything else in this size, this is a perfect, super-convenient, well-organized way to get them.
Recreate
Reviewed in the United States on May 22, 2025
The Monstrum M3 Red Dot Screw Kit is great for spares or replacements. The screws feel very high quality and the threads are very smooth. I didn't have any worries about them stripping while installing. In fact I used them to replace the stock screws that came on my TX22 because one of those screws had stripped with hardly any torque. They fit great and they come in individual baggies that are labeled with their size. Solid deal for an assortment of optic screws. They also come with blue thread locker pre applied, though I'd personally recommend adding a touch more.
Ryan
Reviewed in the United States on May 21, 2025
Great assortment of optic mounting screws for the 365 and other brands of slides that accept different lengths of mounting screws. Cheaper than buying the wrong set of screws and having to buy more to get the correct ones.
Kelly
Reviewed in the United States on May 20, 2025
These screws do the job required without any problems. They fit the advertised application for me easily, they seem to be reasonably good quality, and they've held up to a couple of range trips so far just fine. I don't see any reason not to recommend them. Good to go!
Tom
Reviewed in the United States on May 1, 2025
A good screw kit to have handy when you work with the reflex dot sights of various footprints and different guns. I have quite a few red/green dot sights of unknown quality which I do test to select a really good one you can rely. Occasionally, one of the screws which came with the dot sight "strips naked" so it's good to have a supply of the replacement screws. Of course, the final test for a sight and the screws is at the range after you put at least 2 or 3 boxes of ammo to see how the sight keeps the zero. It's not a big secret that many inexpensive sights do not.
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