The Sig Sauer P365XL is one of the most popular concealed carry handguns. Since it is optics ready, it makes a lot of sense to add a red dot and is the most popular and easiest upgrade by far.
There are a ton of red dots on the market in every shape and size. Holosun makes some of the most popular red dots since they are affordable and full of advanced features. There are still many Holosun red dot models to choose from. Which ones fit the Sig P365XL?
We have done all the research for you. Below is a complete list of all the Holosun red dots that fit the Sig P365XL.
The Sig P365XL Optics Footprint
The Sig Sauer P365XL is an optics ready compact carry handgun that is compatible with any red dot that has the RMSc footprint. It is also compatible with the Holosun “K” footprint and does not require an adapter plate for red dots with either of these footprints.
This is possible since the footprint on the slide does not have any recoil lugs, and the red dot is located by the raised screw holes.
Note that the red dot mounting cover plate on the P365XL holds the rear sight. So, when a red dot is mounted the rear sight is lost. This can be mediated by choosing a red dot that has a built-in rear sight notch that can be used as a backup in case the red dot fails.
The Holosun red dots listed below will fit the Sig P365XL:
Holosun EPS Carry
The Holosun EPS Carry has a modified version of the Holosun “K” mounting footprint. It will directly mount to the Sig P365XL without an adapter plate. See our full Holosun EPS Carry Mounting Guide for more info.
Holosun has two red dots in this family. The “EPS Carry” and the “EPS”. Be careful not to confuse them as the standard EPS is larger than the EPS Carry. While the EPS will still fit on the Sig P365XL, it is large and hangs off the side of the slide.
There are multiple versions of the EPS Carry. Below is a quick summary of each.
EPS Carry Red MRS – This version has a multi-reticle system that is selectable between a 2 MOA dot, 32 MOA circle, and a combination 2MOA dot/32MOA circle. The reticle is red.
EPS Carry Green MRS – This version is the same as above except the reticle is green.
Ronin EPS Carry RD MRS – Same as the standard EPS Carry Red MRS except the top solar power backup and automatic intensity adjust has been replaced with Ronin Logo.
Ronin EPS Carry GR MRS – Same as the standard EPS Carry Green MRS except the top solar power backup and automatic intensity adjust has been replaced with Ronin Logo.
EPS Carry Red 6 – This version has a 6 MOA red dot.
EPS Carry Green 6 – This version has a 6 MOA green dot
EPS Carry Red 2 – This version has a 2 MOA red dot.
EPS Carry Green 2 – This version has a 2 MOA green dot.
Holosun SCS Carry
The Holosun SCS Carry has a modified version of the Holosun “K” mounting footprint. It will directly mount to the Sig P365XL without an adapter plate. See our full Holosun SCS Carry Mounting Guide for more info.
Note that the multiple versions if the SCS red dot, but these all have different mounting footprints depending on the model. Only the SCS Carry will fit on the P365XL.
There is only one model of the SCS Carry. It has an internal rechargeable battery with a solar panel. The reticle is the same as the EPS Carry – MRS 2 MOA dot and 32 MOA circle. However, it is only available in green.
Holosun 507K
The Holosun 507K has Holosun’s “K” mounting footprint. It will mount directly to the Sig P365XL without an adapter plate. See our full Holosun 407K/507K Mounting Guide for more info.
The 507K red dot has the same Multi Reticle System (MRS) as the EPS Carry. It is selectable between a 2 MOA dot, 32 MOA circle, and a combination 2MOA dot/32MOA circle.
There are two versions, one with a red reticle and one with green.
HS507K X2: Red 2 MOA dot and 32 MOA circle
HE507K-GR X2: Green 2 MOA dot and 32 MOA circle
Holosun 407K
The Holosun 407K has Holosun’s “K” mounting footprint. It will mount directly to the Sig P365XL without an adapter plate. See our full Holosun 407K/507K Mounting Guide for more info.
The 407K red dot is the same as the 507K, except it does not have a MRS reticle. It has a reticle with a 6 MOA dot available in either red or green.
HS407K X2: Red 6MOA dot
HE407K-GR X2: Green 6 dot