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

FREE SHIPPING on Over 250,000 Products

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 FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll 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

Stern Defense SD MOD4 M-Lok Handguards Up to 37% Off w/ Free S&H — 4 models

Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
1 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
2 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
3 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
4 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
5 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
6 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
7 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
8 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
9 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
10 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
11 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
12 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
13 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
14 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
15 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
16 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
17 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M
18 of 18 images
Stern Defense SD MOD4 M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Questions & Answers
Does this have a barrel nut and will it accomodate a kak industries flash can? Expert Answer

This will come with the barrel nut and everything else need to install. Because the KAK "Flash Can" attaches to the end of the barrel and because the barrel should always extend past the handguard, this handguard should not cause any issues when used with the "Flash Can."

by Julia, Gear Expert, December 18, 2020
See 1 More Answer
Is it 4 inches long or 5??? Manufacturer Answer

4 inches total.

by STERN DEFENSE, Manufacturer, November 27, 2024
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
It’s nothing special and installation sucks by Tim, Verified Owner, February 21, 2022
I ordered this because I needed an 8” handguard and they’re hard to find, this was the cheapest I could get and optics planet got it to me quick. My first impression was that the barrel nut was aluminum (which I’m not a fan of in rifle caliber) and ...
Read More...
1/2 found this helpful
Helpful Positive Review
Good stuff at a low price by Rob, October 27, 2023
For the money, it’s great! It’s built well enough to hold tight onto the upper and mount lights, grips etc. I wouldn’t trust it to hold zero with a laser, but otherwise good.
1/1 found this helpful
Helpful Positive Review
Fit perfect but... by jechu87, Verified Owner, April 17, 2020
The handguard fits perfect looks nice but keep in mind that you will have to get some tools for installation, tools not include here like on some other ar parts for that reason I give 4 stars. Other than that the product works great
5/5 found this helpful
Most Recent Reviews
super easy installation by Arma, Verified Owner, January 30, 2026
All MLOK everywhere. Long 15” handguard that is also lightweight with lots of real estate for anything you want to install. Came with the barrel nut, handguard, screws and shims. Installation is easy if you know what you’re doing. I would recommend ...
Read More...
Most Recent Reviews
Excellent for my application by Jay Rock, Verified Owner, January 25, 2026
I found out about this brand because the 9mm AR I bought last year had a 4 inch Stern Handguard. I replaced the 5 inch barrel with an 11 inch barrel and wanted a 10 inch handguard. Since I found nothing wrong with the existing Stern 4 inch handguard ...
Read More...
Most Recent Reviews
S is for sweet by Steven Ebel, Verified Owner, August 25, 2024
So im pretty happy it's the style i was looking for and function. Solid design and extra hold from sliding forward. Mostly the S on the side is my first initial i use on everything and this one's already id'd ,thanks Stern. Ohhh yeah the stock ad...
Read More...
Read All 8 Reviews

14% OFF Gun Parts

See promotion details.
MERICAAClick to Copy Coupon Code
Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Show In Stock Only
4 Models Available

Show with deals only:

Coupon Available
Handguard Length
All
Search

Product Info for Stern Defense SD MOD4 M-Lok Handguards

The free float M-LOK handguard from Stern Defense offers excellent ergonomics while remaining lightweight and strong. This handguard is M-LOK compatible to accept your favorite attachments. Features a secure clamp on mounting system that ensures that the handguard remains in place even under heavy abuse, sustained full auto fire, and shooting prone from a bi-pod. Machined from 6061 aircraft grade aluminum and hard-coat anodized for longevity and durability. These handguards also feature quick disconnect swivel holes.image

Also Included, Barrel Nut Shims and Bolts.

Specifications for Stern Defense SD MOD4 M-Lok Handguards:

Manufacturer: Stern Defense
Color: Black
Finish: 6061 aircraft grade aluminum
Fabric/Material: Hard-coat Anodized
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Gun Rail: M-LOK
Condition: New
Included Accessories: Standard
Quantity: 1

Features of Stern Defense SD MOD4 M-Lok Handguards

  • 6061 aircraft grade aluminum.
  • Hard-coat anodized.
  • Sturdy construction.
  • Light weight construction.
  • Length 15 inches.
  • Smallest inside diameter 1.435 inches.

Package Contents:

  • Stern Defense SD MOD4 M-Lok Handguards

Stern Defense SD MOD4 M-Lok Handguards Orderable Models

List of Orderable Models

  • Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M , MPN: 002-SD HG8 MOD4-M , UPC: 850001176194 , Code: 3JS-HZ-SDAK-002-SD-HG8-MOD4-M
  • Stern Defense SD M-Lok Handguards 10in, Black, 002-SD HG10 MOD4-M , MPN: 002-SD HG10 MOD4-M , UPC: 850001176163 , Code: 3JS-HZ-SDAK-002-SD-HG10-MOD4-M
  • Stern Defense SD M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M , MPN: 002-SD HG4 MOD4-M , UPC: 850001176156 , Code: 3JS-HZ-SDAK-002-SD-HG4-MOD4-M
  • Stern Defense SD M-Lok Handguards 15in, Black, 002-SD HG15 MOD4-M , MPN: 002-SD HG15 MOD4-M , UPC: 850001176149 , Code: 3JS-HZ-SDAK-002-SD-HG15-MOD4-M

Stern Defense SD MOD4 M-Lok Handguards Unavailable & Discontinued Models

List of Unorderable Models

  • USED Stern Defense SD MOD4 M-Lok Handguards 4in, Black, 002-SD HG4 MOD4-M, EDEMO1, Condition Fair, Other , MPN: 002-SD HG4 MOD4-M-EDEMO1 , Code: 3JS-HZ-SDAK-002-SD-HG4-MOD4-M-EDEMO-OT-D
  • USED, Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M , MPN: 002-SD HG8 MOD4-M-EDEMO , Code: 3JS-HZ-SDAK-002-SD-HG8-MOD4-M-EDEMO-RE-B
  • USED Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M, EDEMO3, Condition Fair, Used , MPN: 002-SD HG8 MOD4-M-EDEMO3 , Code: 3JS-HZ-SDAK-002-SD-HG8-MOD4-M-EDEMO-US-D
  • USED, Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M , MPN: 002-SD HG8 MOD4-M-EDEMO , Code: 3JS-HZ-SDAK-002-SD-HG8-MOD4-M-EDEMO-OB-A
  • USED Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M, EDEMO1, Used, Condition Good , MPN: 002-SD HG8 MOD4-M-EDEMO1 , Code: 3JS-HZ-SDAK-002-SD-HG8-MOD4-M-EDEMO1
  • USED Stern Defense SD MOD4 M-Lok Handguards 8in, Black, 002-SD HG8 MOD4-M, EDEMO2, Used, Condition Like New, Inspect and Rebox , MPN: 002-SD HG8 MOD4-M-EDEMO2 , Code: 3JS-HZ-SDAK-002-SD-HG8-MOD4-M-EDEMO-RE-A
Compare (0)
1 item has been added
Add at least two items to compare