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The B5 Systems M-LOK Handguard is one of those simple upgrades that makes a factory AR-15 feel like your own. It's a two-piece, drop-in replacement for the standard clamshell handguard you'll find on a lot of stock carbines, and it swaps out that chunky ribbed plastic for a slim, low-profile grip surface. B5 keeps things function-over-flash here, and that shows in a design that skips the gimmicks and just gives you a better place to put your support hand.
The slim diameter is the headline. A thinner profile means your hand wraps around it more naturally, and the built-in handstop up front gives you a solid reference point so you're not sliding forward toward the muzzle. Six sides of M-LOK slots run around the guard, so you've got plenty of room for a light, a vertical or angled grip, a sling mount, or whatever else you like to run. Built from durable composite with a stamped aluminum heat shield inside, it keeps the weight down to right around 3.9 ounces while giving your hand some protection from a hot barrel.
This is a carbine-length guard, meaning it's built for rifles with a carbine gas system. A quick way to check: measure from the front of the receiver to the back of the front sight block, and if it's roughly 7 inches, you're in the right ballpark. It fits both round and triangular handguard caps, which covers a huge range of common builds like the Ruger AR-556, S&W M&P-15 Sport II, and DPMS Oracle. Installation is straightforward and drops right in with no permanent changes to the rifle, so it's a friendly job even if you're newer to working on your own gun.
B5 Systems has built a reputation on gear that just works, and this handguard fits that mold. It's an easy, affordable way to shed some bulk, add M-LOK versatility, and clean up the look of a stock carbine. Made in the USA, it's a smart pick for anyone who wants a better grip and mounting options without stepping up to a full free-float rail.
It's made for carbine-length gas systems, which are common on a lot of stock 16-inch carbines. To be sure, measure from the front of the receiver to the back of the front sight block, and if it's around 7 inches you're good to go. It fits both round and triangle handguard caps, covering popular rifles like the Ruger AR-556, S&W M&P-15 Sport II, and DPMS Oracle.
Not at all. It's a two-piece drop-in that replaces your existing clamshell handguard without any permanent changes to the rifle. Most folks can knock it out at home with basic tools in a few minutes, making it a great first upgrade if you're new to working on your own AR.
No, this is a drop-in style guard, not a free-float rail. It uses your existing barrel nut, delta ring, and handguard cap, so it doesn't change your barrel or gas system interface. If you want to keep things simple and just gain a slimmer grip with M-LOK slots, that's exactly what this is built for.
It offers M-LOK attachment points across six sides of the handguard, so you've got room all the way around. That gives you plenty of flexibility for a weapon light, vertical or angled foregrip, sling mount, or laser. The built-in stamped aluminum heat shield also helps keep things comfortable when the barrel warms up.
| UPC | 814927022287 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | HMC-1357 |
| Length | 11.1000 |
| Product Type | Handguard |
| Color | Black |
| Model | |
| Style | M-LOK |
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