What tool do I need to install the set screws?

Small Allen wrench which is come with the package

I want to buy this for friend he is kind lets us borrow his shotgun. this is model Winchester defender upc048702114090

I bought this for my Winchester SXP Marine Defender and it fits well. Although my Defender is a slightly different model than yours, the unit mounts to the top of the weapon via the standard factory accessory / optic mounting holes, so it should fit yours as well.

Will this fit an SX4?

If it has the four screws on top and doesn't interfere with the action then yes it should work.

Would this fit a stevens 320 defense 12ga.?

I can’t say, but it fit my Winchester perfectly.

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Description

🔒 Secure Your Shotgun, Secure Your Confidence!

OPTICS READY - Easily mount Picatinny or Weaver scopes and red dots for enhanced targeting precision.
READY FOR ACTION - Holds up to six 12 gauge shells, so you're always prepared for whatever comes your way.
LIFETIME ASSURANCE - Enjoy peace of mind with a lifetime guarantee on all Monstrum products.
ELEVATE YOUR FIREPOWER - Designed specifically for Winchester SXP Defender / 1300 shotguns, ensuring a perfect fit.
HASSLE FREE INSTALLATION - Installs effortlessly with included set screws—no gunsmithing required!

The Monstrum Side Saddle Shell Holder is expertly crafted for the Winchester SXP Defender and 1300 model shotguns, accommodating up to six 12 gauge shells. It features a user-friendly installation process with no need for gunsmithing, and allows for the mounting of various optics, all backed by a lifetime guarantee.

Reviews

C**L

Easy install perfect fit

Why did you pick this product vs others?:Super easy to install good quality almost like it should’ve been on there from factory small price for a big function and aestheticly pleasing

19.06.2025

S**.

Very nice!

Fits perfectly and looks great. As far as the fit of some shot shells, yes, they can be a bit loose. They don't fall out but slip. Some other shells fit better so the tolerance is critical. I may take it off again and use my heat gun to get them to be a tad tighter by heating them and squeezing them in a little. I believe they are plastic but will look closer soon. Just got it today. Screws were perfect too but I recommend using a light duty locktite product and be sure not to over torque them. Gun receiver is Aluminum so torque is also critical. UPDATE: I used my heat gun to heat each shell holder and then held each in tighter until they cooled. Use a glove or rag to hold them in while hot. Worked perfectly. They will not fall out from gravity or a hard shake yet pull out with no issues. Just be careful of your heat setting and time on each holder. They only need to close a few thousands of an inch to correct them. I squeeze them a good amount because they relax back into original position, minus just enough to fix the problem.

27.12.2023

W**

SXP Defender

Why did you pick this product vs others?:Fits Winchester SXP defender. Easy install and fits shells nicely. 100% recommend good and cheap upgrade

10.07.2025

T**G

Winchester SXP Amazing

Awesome. Perfect fit. Would buy again in the future. Solid material.

9.07.2025

A**Z

Fits the SXP Winchester home defender

This fits well, my only complaint is that the shells are a bit too snug and takes some playing to get them out but other than that it's a nice addition so I can have extra ammo within immediate reach which is nice.

15.06.2025

J**N

Great Products

Great product works like advertised, goes right on my shotgun no drilling, works great really like it

11.04.2025

V**D

Nice for the price

I really love the combo. Super easy to install, seriously like 5 minutes. The only thing was the inserts to hold the ammo were a tiny bit loose, so I added some electrical tape as you see in the image. Now the ammo fits and does not slide out. Other that that, it’s Amazing!

27.08.2023

R**O

Winchester SXP

Fits great and is very functional

29.05.2025

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