




🔫 Elevate your Winchester game—carry more, aim better, install faster!
The Monstrum Side Saddle Shell Holder is a precision-engineered accessory designed exclusively for 12 gauge Winchester SXP Defender and 1300 shotguns. It securely holds up to six shells while providing a robust mounting platform compatible with Picatinny and Weaver optics. Installation is quick and hassle-free, requiring no gunsmithing, and the product is backed by a lifetime guarantee, making it a must-have upgrade for serious shooters.









| ASIN | B0BGMW52VL |
| Best Sellers Rank | #83,652 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #265 in Hunting & Shooting Gun Stock Accessories |
| Brand Name | Monstrum |
| Customer Reviews | 4.6 4.6 out of 5 stars (165) |
| Date First Available | September 27, 2022 |
| Item Package Dimensions L x W x H | 6.69 x 2.48 x 1.93 inches |
| Manufacturer | Monstrum |
| Package Weight | 0.19 Kilograms |
| Part Number | RM241 |
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.
J**H
Perfect fit
Ordered this side saddle for my Winchester sxp marine defender 12ga and it fit perfectly . Very well made product, am very pleased with the purchase.
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
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.
F**O
Easy to install
Bought it for my winchester sxp marine and bolted it on with zero issues. The six slots matches up perfectly with the 5 +1 capacity.
E**S
Fitment
Fits perfectly.
E**G
Sick shell holder
Fits great and looks cool on my SXP 12 gauge.
J**R
5/5 Great product
Great product... be careful with install as the mounting screws (if too tight) will stop the action from cycling.
Trustpilot
2 weeks ago
1 month ago