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.

Shopping Cart
Questions & Answers
What size wrench is needed for the barrel nut? Expert Answer

The manufacturer has not provided that information, even on their own site. If you contact them directly, they should be able to provide you with that information. You can reach them here: https://www.aimsportsinc.com/contact/

by Ethan C., Gear Expert, September 20, 2019
Is this compatible with an Anderson AM 15 Expert Answer

The AIM Sports Inc AR/M4 KeyMod Handguard will fit as long as you AM-15 does not utilize a front sight post or railed gas block. As long as you have a low profile gas block, this handguard will fit.

by Ethan, Gear Expert, January 28, 2022
Customer Reviews
Helpful Positive Review
Very Good quality for the price by Rick, April 13, 2020
Picked this up on sale and really glad I did. Looks and fit my upper great. The barrel nut claims to be US manufactured, but the aluminum forend is made in China. Either way, it was an easy install and looks great - especially at this price.
1/1 found this helpful
Helpful Positive Review
Great rail by Srnj, Verified Owner, June 14, 2020
The rail is light and sturdy. I had to modify my upper receiver a little bit because I have a custom fat upper, but a Dremel to care of it. Fit generic key mod rails. It's easy to install went right on after I shaved my upper a little. But it should ...
Read More...
1/1 found this helpful
Helpful Positive Review
Great Rail for a Great Value by Dustin Logan, Verified Owner, July 3, 2020
I've run this rail in 3 fighting rifle classes now and its handled the abuse. Holds zero and my light with no problem at all. All keymod holes seem to be in spec and lock down tight. Very happy with it
1/1 found this helpful
Most Recent Reviews
AIM Sports AR/M4 GENII HANDGUARD by ARPOWDERMAN, Verified Owner, June 5, 2024
The AIM Sports AR/M4 KeyMod GenII Handguard is actually a very good handguard for the price point. I ordered it for a cheap little 22lr plinking rifle and it has worked out very well for its intended use. The barrel nut and hardware could be made of ...
Read More...
Most Recent Reviews
AIM Sports Keymod Handguard by ARPOWDERMAN, Verified Owner, August 28, 2023
The Aim Sports Keymod Handguard is a pretty good handguard for the money.I would say to anyone looking for a low priced handguard for a plinking rifle these handguards will do just fine. The barrel nut is a little cheesy and lacks the quality I think...
Read More...
Most Recent Reviews
Solid handguard by allinone, March 19, 2023
Bought this handguard to mate with the Range Tools Billet Upper and they went together like they were made to. Absolutely solid handguard that aligned perfectly straight. I shaved off the alignment tabs to fit the billet upper but if you had a Mildre...
Read More...
Read All 11 Reviews

AIM Sports with Amazing Deals Worth Targeting!

Blazin' Deal
Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
Color: Black Finish: Anodized Black Fabric/Material: Aluminum Gun Make: AR Platform Gun Model: AR-15 Handguard Length: 13.5 inGun Rail: Picatinny Condition: New Included Accessories: Standard

Code: 77-HZ-RKHG-MTK556M

MPN: MTK556M

UPC: 815879018199

Blazin' Deal
List: $89.99Save 30%
$62.99

Product Info for AIM Sports Inc AR-15/M4 KeyMod Handguard Gen II

Bring some serious utility to your firearm by outfitting it with this AIM Sports Inc AR/M4 KeyMod Handguard Gen II. AIM Sports Inc designed these AR Handguards & Forends with seven rows of KeyMod mounting surface so that you can completely customize your build any way you want, adding your favorite optics, lasers, lights, and other accessories with ease. You can use the AIM Sports Inc AR-15 .556 KeyMod Handguard Gen II with low profile gas blocks, and its sleek and ergonomic design allows quick target acquisition and enhanced mobility. The included steel mounting hardware ensures a solid, secure fit to your weapon while the anti-rotation indexing keeps this handguard steady throughout any activity. Use this rugged and ultra-light AIM Sports Inc Free Float KeyMod Handguard Gen II to expand your customization options and gain a reliable gripping surface for taking down targets at all ranges.image

Specifications for AIM Sports Inc AR-15/M4 KeyMod Handguard Gen II:

Manufacturer: AIM Sports Inc
Color: Black
Finish: Anodized Black
Fabric/Material: Aluminum
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Handguard Length: 13.5 in
Gun Rail: Picatinny
Condition: New
Included Accessories: Standard
Mount Type: KeyMod
Quantity: 1

Features of AIM Sports Inc AR-15/M4 KeyMod Handguard Gen II

  • Steel barrel nut
  • Compatible with all KeyMod accessories
  • Works with low profile gas blocks
  • Seven rows of KeyMod mounting surface for ultimate modularity
  • 1913 rail meticulously engineered to be ultra light

Package Contents:

  • AIM Sports Inc AR-15/M4 KeyMod Handguard Gen II
  • Mounting hardware

AIM Sports Inc AR-15/M4 KeyMod Handguard Gen II Orderable Models

List of Orderable Models

  • AIM Sports Inc AR-15/M4 KeyMod Handguard Gen II, 13.5in, Black, Medium, MTK556M , MPN: MTK556M , UPC: 815879018199 , Code: 77-HZ-RKHG-MTK556M

AIM Sports Inc AR-15/M4 KeyMod Handguard Gen II Unavailable & Discontinued Models

List of Unorderable Models

  • USED AIM Sports Inc AR/M4 10in Keymod Handguard Gen II, Black, MTK556C, EDEMO6, Condition Parts Only/Salvage, Wrong Product , MPN: MTK556C-EDEMO6 , Code: 77-HZ-RKHG-MTK556C-EDEMO-WP-F
  • AIM Sports Inc AR/M4 10in Keymod Handguard Gen II, Black, MTK556C , MPN: MTK556C , UPC: 815879018502 , Code: 77-HZ-RKHG-MTK556C
  • AIM Sports Inc AR-15/M4 KeyMod Handguard Gen II, 15in, Black, Medium, MTK556R , MPN: MTK556R , UPC: 815879018205 , Code: 77-HZ-RKHG-MTK556R
Compare (0)