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
Is the barrel nut 18tpi or 16tpi? Expert Answer

The barrel nut is DPMS pattern.

by Tom B, Gear Expert, November 5, 2021
does it come with barrel nut? Expert Answer

yes this item does come with a barrel nut.

by Brandon B, Gear Expert, September 21, 2021
Customer Reviews
Most Recent Reviews
Great choice! by Jeff, August 2, 2021
Fit my aero m5 great. The anodizing is slightly lighter then aero, but my areo receiver was dripping oil when it was shipped, after handling both a bit it is barely noticeable. Jl billet does nice work, period
Most Recent Reviews
you won't be dissapointed! by joe, Verified Owner, January 9, 2021
This handguard is exactly what i wanted and at a reasonable price! It's extremely solid, but not overly heavy. It was very easy to install and looks great! I have yet to attach any m-lok accessories, but the machining looks excellent and i expect zer...
Read More...
Read All 2 Reviews
4 Models Available
Handguard Length
All
Weight
All
Additional Features
All
Search

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for JL Billet Straight Cut AR-10 M-Lok Handguard

JL Billet 308 12.8" Straight Cut Free Float M-Lok Handguard High Profile The continuous top 1913 Picatinny rail allows you to mount sights, optics and any other accessories without additional rail sections. The Magpul M-Lok system allows users to customize the hand guard with removable rail sections and direct mount accessories. The hand guard is constructed of 6061-T6 aircraft aluminum and finished with an optional Mil-Spec type III hard coat black anodizing. The MLS has a precision bore to fit the proprietary barrel nut which removes any unwanted play and ensures an exact fit!! Installation requires a 1-5/16" crows foot wrench (not included) for the barrel nut; standard AR-10 barrel nut wrenches will not work with this hand guard system. These rails are some of the lightest you will find anywhere! The 12.8" weighs in at only 9 oz. including the barrel nut. If you are looking for a unique look, light weight, and quality forend then this is it! DPMS High Profile Rail Height Technical Information: Free Float Design Material: Hard Coat Anodized Aluminum Handguard 7075-T6 Barrel Nut Stainless Steel Key Seat Precision Bore 1913 Picatinny Continuous Top Rail Accepts M-Lok Rail Sections & Accessories (2x 5 slot sections included) Requires 1-5/16" Crowfoot Wrench (not included) Weight is 10.9oz. with barrel nut ID=1.525" Rails will ship in raw aluminum if Hard Black option is not selected Rail length is measured along the top Download Installation Instructionsimage

WARNING: California`s Proposition 65

Specifications for JL Billet Straight Cut AR-10 M-Lok Handguard:

Manufacturer: JL Billet
Color: Black
Finish: Hard Coat Anodized
Fabric/Material: 6061-T6 Aluminum
Gun Make: AR Platform
Gun Model: AR-10
Gun Type: Rifle
Handguard Type: Free-Float
Gun Rail: Picatinny
Condition: New
Included Accessories: Standard
Mount Type: M-LOK
Country of Origin: USA
Quantity: 1

Features of JL Billet Straight Cut M-Lok Handguard

  • AR10 308 light weight 12.8" free-float Mlok handguard with straight cut front. Machined from US aircraft grade 6061 T6

Package Contents:

  • JL Billet Straight Cut M-Lok Handguard

JL Billet Straight Cut AR-10 M-Lok Handguard Orderable Models

List of Orderable Models

  • JL Billet Straight Cut AR-10 M-Lok Handguard, Low Profile, .308, 12.8 inch, Black, JLB-MLS-308-12L-A , MPN: JLB-MLS-308-12L-A , UPC: 617407024562 , Code: 3KR-HZ-JLB9H-JLB-MLS-308-12L-A
  • JL Billet Straight Cut AR-10 M-Lok Handguard, High Profile, .308, 12.8 inch, Black, JLB-MLS-308-12H-A , MPN: JLB-MLS-308-12H-A , UPC: 617407024555 , Code: 3KR-HZ-JLB9H-JLB-MLS-308-12H-A
  • JL Billet Straight Cut AR-10 M-Lok Handguard, High Profile, .308, 15 inch, Black, JLB-MLS-308-15H-A , MPN: JLB-MLS-308-15H-A , UPC: 617407023961 , Code: 3KR-HZ-JLB9H-JLB-MLS-308-15H-A
  • JL Billet Straight Cut AR-10 M-Lok Handguard, 15 inch, Black, JLB-MLS-308-15L-A , MPN: JLB-MLS-308-15L-A , UPC: 617407023855 , Code: 3KR-HZ-JLB9H-JLB-MLS-308-15L-A

JL Billet Straight Cut AR-10 M-Lok Handguard Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, JL Billet Straight Cut M-Lok Handguard, Low Profile, AR10, .308, 15 inch, Black, JLB-MLS-308-15L-A , MPN: JLB-MLS-308-15L-A-DEMO , Code: 3KR-HZ-JLB9H-JLB-MLS-308-15L-A-DEMO
  • Open Box, Dealer Demo, JL Billet Straight Cut M-Lok Handguard, High Profile, AR10, .308, 15 inch, Black, JLB-MLS-308-15H-A , MPN: JLB-MLS-308-15H-A-DMO , Code: 3KR-HZ-JLB9H-JLB-MLS-308-15H-A-DMO
Compare (0)