Why can this not ship to California??

It simply has to do with the "materials used is known to cause cancer" warning label. This must be on the packaging somewhere, and also in the description of this item. A lot of optics are mistakingly "excluded" from shipping to CA because of this. And the listers are clueless as to how to "uncheck" the box that Amazon turns on automagically when listing these items.

Will this fit the Springfield xdm elite osp and what plate do I use?

Springfield uses the SMS footprint (Shield) standard. On my XDS, the SMSc or RMSc (Again Shield) fits best are those are the same width as the slide on that pistol. You will need an adapter for this (holosun) to fit. Holosun uses a MODIFIED SMS However. Which means that if you're willing to grind off the rear two mounting lugs, and lower the height of the front two (grind down) it'll fit on like a glove. WARNING: Check with someone who knows before you do any modification to your slide!!! This worked great for me, but I can not guarantee that you'll have the same results. If you're not experienced at working on pistol slides, I strongly advise you take it to someone who is. I take no responsibility for any of this advice.

Does this sight work with s&w m&p 2.0 ?

You don’t have to mill the slide. There are mounting plates that will use your rear sight dovetail. Look for EGW guns

Is this the correct model for the FNX -45 tactical?

My 507c X2 fits just fine on my FNX-45 tact…

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407C/507C-X2 Series, 2 MOA Dot, 32 MOA Circle Dot Options, 7075 Aluminum, Open, Solar, Shake Awake, RMR Footprint (Red, Green Reticle) (Black, Burnt Bronze)

Product ID: 223145531

Details

Brand
HOLOSUN
Color
Black
Item Weight
1.44 ounces
Magnification Maximum
1 x
Magnification Minimum
1 x
Material
Aluminum

🎯2 MOA precision dot

🔋50,000 hrs battery life

☀️Solar Failsafe backup

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302069CFA

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In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎯 Lock, Load, and Lead with Precision – Never Miss Your Mark!

BUILT TO LAST 🛡️ - Crafted from aircraft-grade 7075-T6 aluminum with anodized finish for rugged durability in any environment.
PINPOINT ACCURACY 🎯 - Switch effortlessly between a 2 MOA dot and 32 MOA circle for ultimate target acquisition.
ENDURANCE CHAMPION 🔋 - Up to 50,000 hours of battery life with Red Super LED and Shake Awake tech—stay powered when it counts.
USER CENTRIC DESIGN 🔧 - Lock Mode prevents accidental changes, side-mounted battery tray for quick swaps, and industry-standard RMR footprint.
SOLAR POWERED RELIABILITY ☀️ - Solar Failsafe ensures your sight never goes dark, automatically adjusting reticle brightness to ambient light.

The Holosun 407C/507C-X2 Series is a cutting-edge open reflex sight designed for full-sized pistols, featuring a versatile Multi-Reticle System with 2 MOA dot and 32 MOA circle options. Engineered with a durable 7075-T6 aluminum body, it boasts an industry-leading 50,000-hour battery life powered by Red Super LED and enhanced by Shake Awake technology. Solar Failsafe backup ensures uninterrupted operation, while Lock Mode and a side-mounted battery tray offer professional-grade reliability and ease of use. Ideal for tactical, competitive, and everyday carry applications.

Specifications

ASIN	B08G6HPY8Y
Aiming Scope Sight Pin Size	2 Inches
Best Sellers Rank	#955 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Gun Sights
Brand Name	HOLOSUN
Color	Black
Compatible Devices	Handgun
Customer Reviews	4.7 4.7 out of 5 stars (6,687)
Included Components	Product
Item Dimensions L x W x H	1.78"L x 1.15"W x 1.15"H
Item Display Weight	0.09 Pounds
Item Type Name	Holster
Item Weight	1.44 ounces
Lens Color	Red/Orange
Magnification Maximum	1 x
Magnification Minimum	1 x
Manufacturer	Holosun
Manufacturer Part Number	HS507C-X2
Material Type	Aluminum
Model Name	HS507C X2
Model Number	HS507C
Mounting Type	Picatinny Mount
Night vision	No
Objective Lens Diameter	0.63 Millimeters
Product Style	Classic Multi Reticle Red Dot Sight HS507C-X2
Reticle Type	Multi-Reticle - Red
Sport Type	Airsoft, Benchrest Shooting, Hunting
Thread Type	UNC
UPC	810047071174
Unit Count	1.0 Count
Warranty Description	2 Year Manufacturer

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