AR-15 Handguard FAQs
Are all AR-15 handguards compatible?
Most AR-15 handguards use a proprietary barrel nut and mounting hardware.
Are AR-15 and AR-10 handguards interchangeable?
No, AR-15 and AR-10 rifles have different dimensions and mounting systems so their handguards are not interchangeable.
How long should my handguard be?
The right handguard length depends on your gas system and barrel length first, then how many accessories will be mounted, and your stylistic needs.
If you want a lightweight handguard for mobility, a shorter one works better. If you want more accessories mounted, a longer one is the right choice.
They generally fit based on length classifications including pistol length, carbine length, mid-length, and rifle length. Lengths vary between manufacturers, reference specific length needed for your rifle.
In most cases a low-profile gas block will allow you to mount a longer handguard than the gas system was originally designed for. I.E. a rifle length handguard on a carbine length gas system.
What is the difference between a free-float and a drop-in handguard?
Free-Float Handguards do not touch the barrel, which helps maintain accuracy by eliminating any contact-induced shifts. They are generally considered more accurate.
Drop-in handguards fit over the Mil-Spec barrel nut and are attached to the front sight base and the delta ring.
What is the difference between Picatinny, M-LOK, and KeyMod rail systems?
Picatinny is an older, traditional rail system with a series of grooves and slots for mounting accessories. It is highly compatible but can be heavier and bulkier.
M-LOK is a modern, modular mounting system that uses slots for accessory attachment. It offers a cleaner, lighter design and is one of the most popular rail systems today.
KeyMod features keyhole-shaped slots for modular accessory attachment. It is similar in function to M-LOK but has different slot shapes.
What tools do I need for my handguard installation?
YHM handguards can be installed with common armorer’s tools, but we also offer a few specialty tools to aid in installation including our Dovetail Vise Jaws and Handguard Wrench.
Do I need to buy any additional parts for my handguard?
No, all YHM AR-15 handguards come with the parts necessary for installation. If needed, we carry a handguard wrench and SLR handguards include the SLR wrench.
We also carry dovetail jaws to mount your handguard rail to a vise to assist with installation.
How do I install my AR-15 handguard?
Installation instructions vary depending on the handguard purchased. Each handguard comes with detailed instructions to aid you through the installation process. Instructions can be found here.