Smith & Wesson M&P 4" & 4.25" IWB Holster

Smith & Wesson M&P 9MM & .40 IWB Holster – Inside Waistband Taco-Style for 1.0, 2.0, 3.6", 4", & 4.25" Models with or without Thumb Safety

This inside waistband taco-style holster is built for the Smith & Wesson M&P 1.0 and M2.0 pistols chambered in 9MM or .40 S&W. Designed to fit barrel lengths of 3.6", 4", and 4.25", this holster supports models with or without a thumb safety, making it a versatile option for concealed carry.

Whether you're carrying for defense, training, or duty use, this holster is crafted to deliver secure retention, red dot compatibility, and all-day comfort.

Key Features:

Designed to Fit: Smith & Wesson M&P 9MM and .40 S&W pistols in Gen 1.0 and Gen 2.0

Compatible Barrel Lengths: Fits 3.6", 4", and 4.25" models

Thumb Safety Compatible: Works with or without the factory safety lever

Optics Ready: Profile cut to accommodate most slide-mounted red dot sights

Open Muzzle Design: Ideal for threaded barrels or compensators

Retention You Control: Easily adjustable to your preferred draw resistance

Concealment Wing (Optional): Add a ModWing with 2 insert options for custom belt pressure to reduce printing

Comfort-Driven Construction: Includes full sweat guard, smooth edges, and minimal material for low-bulk concealment

Right- & Left-Handed Models Available

Made from .093" thick thermoplastic for strength and durability

Proudly made in the USA

Built to Perform:

Each holster is vacuum-formed using a precision-machined mold based on a CAD model of the actual firearm. Every unit is hand-finished and tested in-house using the real pistol to guarantee a secure fit and reliable function.

Pro Tip:

Apply a removable thread locker to each screw once you've set your preferred adjustments—this helps keep everything secure during daily carry.

Need help choosing the right setup?

Our Belt Attachment Blog Article explaining the different options can be found here:

4Bros Four Brothers Holsters Inside Waistband Attachments Explained

Magazine Pouches for 9mm and 40 S&W modes:

Smith & Wesson M&P 9mm IWB Magazine Pouch

Smith & Wesson M&P 9mm OWB Magazine Pouch

• Full Sweat Guard
• Adjustable Retention
• Adjustable Cant
• Profile cut to allow red dot sights
• Open Muzzle for threaded barrels and compensators
• Minimal material and smooth edges
• Made from .093" thick thermoplastic for durability.
• Optional Modwing includes 2 inserts to allow the user to adjust the amount of leverage placed against the inside of the belt to reduce firearm printing
• Proudly Made in the USA

• Monoblock
• 1 Series Gear Clips
• Ultituck
• Soft Loops 
• RCS Overhooks
• Ulticlip

IWB Belt Attachments Explained

Made in America. Founded, located, engineered, manufactured, and shipped from Northern Indiana.

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