The Midwest Industries Side Folder with Buffer Adapter is a heavy-duty folding stock solution built for AR-15 platforms that demand compact storage or transport without sacrificing solid lockup. This side-folding mechanism lets you configure the folder to fold left or right depending on your shooting hand and setup, making it adaptable to a wide range of AR builds. Whether you're working in tight spaces, fitting your rifle into a vehicle, or simply want the flexibility of a collapsed profile, this folder delivers the kind of rugged, modular design that works across different buffer tube configurations.

Built from 4140 steel with a mag phosphate finish, the Midwest Industries folder uses a full-length locking lug and steel clamp with broad surface engagement to keep things locked solid in both open and folded positions. The modular design accommodates Mil-Spec buffer tube attachments, so you can pair it with the stock setup that fits your needs. At just 8.4 ounces, the weight penalty is minimal, and the dimensional footprint reflects careful engineering: the folder adds 2.5 inches to your rifle length when open and only 0.75 inches when folded—a meaningful gain in packability without sacrificing functionality.

Made 100% in the USA, this side folder carries the kind of finish and precision you'd expect from Midwest Industries. It's the sort of component that works best when paired with quality stocks and buffer systems, so think of it as the foundation for a compact AR build that can still run hard when you need it to.

Key Features

• Configurable left or right folding for shooter preference and ergonomics
• 4140 steel construction with mag phosphate finish for corrosion resistance
• Full-length locking lug and steel clamp for rock-solid lockup in both positions
• Modular design works with standard Mil-Spec buffer tube attachments
• Compact profile: 2.5" added length when open, 0.75" when folded
• Lightweight at 8.4 ounces
• 100% manufactured in the USA

Specifications

Brand	Midwest Industries
Compatibility	AR-15 platforms with Mil-Spec buffer tube
Material	4140 steel
Finish	Mag phosphate
Folding Configuration	Left or right (user-selectable)
Length Added (Open)	2.5 inches
Length Added (Folded)	0.75 inches
Weight	8.4 ounces
Country of Origin	USA

Frequently Asked Questions

Will this side folder work with my AR-15?

The Midwest Industries side folder is designed for AR-15 platforms equipped with a standard Mil-Spec buffer tube. As long as your rifle accepts Mil-Spec components, this folder will mount and function as intended.

Can I switch between left and right folding?

Yes. The side folder can be configured to fold left or right, giving you the flexibility to set it up for your shooting hand and overall ergonomic preference.

How much does this add to my rifle's length?

When open and ready to shoot, the folder adds 2.5 inches to your rifle's overall length. When folded for storage or transport, it adds only 0.75 inches, significantly reducing your firearm's footprint.

What stocks or attachments work with this folder?

The modular design accommodates different stock attachments as long as they are compatible with a standard Mil-Spec buffer tube. Confirm your stock's buffer tube interface before pairing it with this folder.