Free Shipping on Orders Over $99 with Coupon Code: FREESHIP for lower 48 states in the U.S.*.  No in-store services, please stay in the car for curbside pickup. Call 562-287-8918, we will bring the items out for you.

JBU F23A Tubular Free-Floating Handguard Front Conversion Kit for M4 AEGs


  • - Full metal construction
  • - CNC-machined design
  • - 3.5 inch tubular handguard
  • - 6.5 inch outer barrel
  • - Steel front iron sight adjustable for elevation
  • - Precision inner barrel, with 6.03mm internal diameter
  • - Compatible with most metal gearbox M4 AEGs


JBU F23A Tubular Free-Floating Handguard Front Conversion Kit for M4 AEGs

This tubular handguard conversion kit by JBU serves as a perfect addition for anyone looking to modify their M4 AEG into an ultra-compact, streamlined CQB rifle. This handguard features a flat black finish and is CNC machined from a solid piece of aluminum, providing added stability and support. It also sports a knurled surface that gives you a rough non-slip grip on the rifle. Thanks to the free-float design, this tubular handguard is much more studier than standard M4 handguards, eliminating any sign of wobble. Weighing in at only 4.8oz, this tubular handguard adds virtually no weight to a standard M4 AEG.

The JBU conversion kit also includes a reinforced outer barrel that runs 6.5 inches long and a high precision inner barrel with an internal diameter of 6.03 millimeters, making shooting more accurate and at higher FPS. Because this handguard replaces the standard delta ring assembly, it is compatible with most metal gearbox M4 AEGs. Making this a complete front conversion kit, the included steel front iron sight comes complete with taper pins and is adjustable for elevation. JBU's Tubular Free-Floating Handguard Conversion Kit is perfect for any airsoft player looking to convert a standard length M4 AEG into a shorty CQB rifle, while maintaining a streamlined look. All necessary components for installation are included, such as a CNC-machined barrel nut, taper pins and tightening tool; however, professional installation may be required.

NOTE: Professional installation is recommended for anyone unfamiliar with installing a new handguard interface system.

In the Box

Tubular handguard

outer barrel

inner barrel

front iron sight

4X taper pins

universal barrel wrench


Length 3.5” in. (handguard)
Construction Aluminum
Compatibility Most metal gearbox M4 AEG rifles
Weight 4.8oz (handguard)

California Proposition 65 Warning: Cancer and Reproductive Harm -

JBU F23A Tubular Free-Floating Handguard Front Conversion Kit for M4 AEGs Quick Compare

This feature is currently unavailable.

Rate & Write a Review


Rate & Write a Review

Product name Q&A


Click on link to download:

Connect with us.