B5 Systems Drop-in Carbine Handguard for AR-15

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Coyote Brown

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Slim Profile Drop-in M-LOK Handguard for Carbine-Length AR-15

B5 Systems makes some of the best, most ergonomic AR-15 furniture on the market, and their new handguards are no exception.  These carbine-length M-LOK handguards feature a slim profile, integrated handstop, and heat shields to protect your hands.  The sleek design makes these handguards easy to grip, and six sides of M-LOK slots leave plenty of room for your favorite accessories.

These handguards work with circular and triangular handguard caps on carbine-length AR-15s.  This means they drop in for many common AR-15 models, including the Ruger AR-556, Smith & Wesson M&P-15 Sport II, and DPMS Oracle.

If you’re not sure if your rifle will work, measure from the front of the receiver to the back of the front sight block.  If it’s around 7 inches, the B5 Carbine handguard will work for you.  Check out our article for an in-depth explanation on gas system length.


  • Material: Heat-Resistant Polymer
  • Fit: Carbine-Length AR-15
  • Equipped with metal heat shields

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Customer Reviews

Based on 13 reviews
James Dumas
B5 Systems Coyote Brown

Bought it for the brown. It really is a good color mixed with FDE.

The hand guard is a lot smaller in diameter than the stock one.That’s the only complaint. Adding grip panels helps.

Build quality is excellent.

Grip and Buttstock are outstanding.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Jeremy Perry

I prefer drop in plastic hand guards to any aluminum ones. I just like the way they feel better. This is the smallest diameter plastic hand guard that I’ve ever seen. I replaced the standard m4 hand guard with this and it is much more comfortable and offers many more grip options than the “chubby” USGI version. I highly recommend!

'Thank you for your review! We are glad to hear that you are satisfied with your B5 Systems Drop-in Carbine Handguard. We also appreciate your preference for drop-in plastic hand guards and are happy to know that this particular one met your expectations. Our goal is to provide our customers with comfortable and versatile products. Thank you for recommending us! Happy shooting!'

Joe Pardo

Everything is all good

Thank you for taking the time to leave a review for the B5 Systems Drop-in Carbine Handguard. We are happy to hear that everything is working well for you. If you ever have any questions or concerns, please don't hesitate to reach out to us. Thank you for choosing our product.

Jon Xiong

B5 Systems Drop-in Carbine Handguard for AR-15

Thank you for your review of the B5 Systems Drop-in Carbine Handguard for AR-15. We're glad you're enjoying it!

Just Right , for me

I do not have small hands but I do have arthritis. An A2 or Magpul MOE foregrip width is very uncomfortable for my hands. The slimmer B5 is not. B5 dropped in, perfect fit. AT3 fulfillment was excellent.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.