+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Midwest Industries Polymer M-Lok Rail Section Up to 41% Off — 3 models

04:30
Midwest Industries Polymer M-Lok Rail Section, 5 Slot, Black, MI-5PMR
Midwest Industries Polymer M-Lok Rail Section, 3 Slot, Black, MI-3PMR
Midwest Industries Polymer M-Lok Rail Section, 7 Slot, Black, MI-7PMR
1 of 1 videos
Midwest Industries M LOK Accessories Installation
Midwest Industries Polymer M-Lok Rail Section, 5 Slot, Black, MI-5PMR
1 of 3 images
Midwest Industries Polymer M-Lok Rail Section, 5 Slot, Black, MI-5PMR
Midwest Industries Polymer M-Lok Rail Section, 3 Slot, Black, MI-3PMR
2 of 3 images
Midwest Industries Polymer M-Lok Rail Section, 3 Slot, Black, MI-3PMR
Midwest Industries Polymer M-Lok Rail Section, 7 Slot, Black, MI-7PMR
3 of 3 images
Midwest Industries Polymer M-Lok Rail Section, 7 Slot, Black, MI-7PMR

Tap Tap to Zoom

Questions & Answers
Are you supposed to order these by picture or description? Expert Answer

The Midwest Industries Polymer M-Lok Rail Section models are as follows. Model number MI-5PMR is the 5 slot model, model number MI-3PMR is the 3 slot model and model number MI-7PMR is the 7 slot model. Choose the model that has the correct number of slots or length for the application you need.

by Hunter, Gear Expert, February 14, 2023
See 1 More Answer
What is the longest rail section that can be installed on 2 M-Lok slots? Can you answer this question?
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Nice, Solid (USA!) Pic Rail - 5 & 7 Slot Photos Reversed by ToolGuy, Verified Owner, August 13, 2024
Nice poly rails, well made in USA! After ordering several 7 slot rails to mount folding handguard pistol grips, I realized a 5 slot photo is shown for the 7 slot listing, and vice-versa. Fortunately OP sent 7 slot rails, which is what the descriptio...
Read More...
1/1 found this helpful
Helpful Positive Review
M-Lok Rail Section by Joe, Verified Owner, January 27, 2024
I bought two of them and they fit my AR pistol perfectly.
1/1 found this helpful
Helpful Positive Review
great Product by Biggamehunter416, Verified Owner, May 25, 2024
Just the right length for my build and bought some spares for future builds
1/1 found this helpful
Most Recent Reviews
Midwest Industries 5-slot Polymer M-Lok to Picatinny Rail by McNally, Verified Owner, October 22, 2025
Well finished, fits well, sturdy (used with a bipod).
Most Recent Reviews
Exactly what I wanted by TDJ22, Verified Owner, December 28, 2023
Very well made, seems like it'll take a beating. I attached it under the muzzle of my ar to mount a streamlight. It works great and very affordable. Thank you Optics Planet!
Most Recent Reviews
Great product by littled, Verified Owner, September 14, 2023
This worked perfect for adding a flash light on my AR. Nicely made. Good quality and easy to mount. Looks good too and doesn't look like an add on. Has a good finish which matches the AR. Very durable and solid mount for my flash light.
Read All 8 Reviews
Show In Stock Only
3 Models Available
Length
All
Weight
All
Additional Features
All
Search

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Midwest Industries Polymer M-Lok Rail Section

Perfect for all of your tactical firearm equipment specifications, the Midwest Industries Polymer M-Lok Rail Section has been designed to supply you with an exceedingly steady area on which to mount your favorite optics or accessory. A successful tactical mount helps keep your optics secure and ready for action. Due to the Midwest Industries Polymer M-Lok Rail Section, obtaining a top of the line tactical mounting rail has never been less difficult. These M-LOK Picatinny Rail Sections from Midwest Industries are made making use of the robust and reliable supplies that you have come to count on from this amazing Midwest Industries name. Midwest Industries has been a huge component of the tactical field for a very long time, and the Midwest Industries Polymer M-Lok Rail Section is the outcome of their determined initiatives to offer you functional solutions to meet your requirements. For a fantastic way to ensure you are mounting your optics with some of the very best tactical rails obtainable, purchase the Midwest Industries Polymer M-Lok Rail Section.

Specifications for Midwest Industries Polymer M-Lok Rail Section:

Manufacturer: Midwest Industries
Color: Black
Fabric/Material: Polymer
Gun Rail: M-LOK
Width: 75 in
Country of Origin: USA

Features of Midwest Industries Polymer M-Lok Rail Section:

  • High strength polymer construction
  • M-LOK mounting hardware included

Package Contents:

  • Midwest Industries Polymer M-Lok Rail Section

Midwest Industries Polymer M-Lok Rail Section Orderable Models

List of Orderable Models

  • Midwest Industries Polymer M-Lok Rail Section, 5 Slot, Black, MI-5PMR , MPN: MI-5PMR , UPC: 812102034179 , Code: MWI-T8-PMRS3-MI-5PMR
  • Midwest Industries Polymer M-Lok Rail Section, 7 Slot, Black, MI-7PMR , MPN: MI-7PMR , UPC: 812102034186 , Code: MWI-T8-PMRS3-MI-7PMR
  • Midwest Industries Polymer M-Lok Rail Section, 3 Slot, Black, MI-3PMR , MPN: MI-3PMR , UPC: 812102034162 , Code: MWI-T8-PMRS3-MI-3PMR
Compare (0)
1 item has been added
Add at least two items to compare