Sons of Liberty Gun Works L89 DriveLock Rail, 15.25″ MLOK
The L89 handguard takes what makes the M89 handguard a best in class product and elevates it even further.
Featuring a Titanium barrel nut, 7 sided M-LOK attachment slots, two integrated steel QD (limited rotation) sockets, and maximized cooling slots beneath the 12 o’clock rail, the L89 is built for end-users who require every little bit of mounting space they can get.
Built on the M89/Drivelock lockup system, the L89 incorporates valued end user feedback in getting the most utility possible out of a handguard in modern combative applications.
Maximum strength, maximum mounting space, and weight savings material choices make this one of the finest fighting handguards available to date.
Installation guide is viewable, here.
Features:
- 15.25” total length
- (Weight coming soon) installed
- Features a rugged DriveLock mounting system
- Machined from aluminum with hardcoat anodized finish
- Full length picatinny rail
- M-LOK slots at 45° positions
- Includes titanium barrel nut and integrated sling sockets
Click here to browse our entire selection of Rails & Handguards.



Joseph M. (verified owner) –
First purchase from rooftop defense, transaction was like gravy train on biscuit wheels, nice and smooth. As far as the Sons of liberty L89 handguard nice workmanship and quality part. Rooftop defense was the only place that had the length handguard in stock. I look forward to doing more transactions in the future. Also thanks for the Ramen Noodles!!
Arthur F. (verified owner) –
This is my second purchase from Rooftop Defense. The transaction went smooth as silk. Now lets talk about the product itself. The SOLGW L89 DriveLocck handguard is amazing. I like the fact that you get an extra quarter of an inch more than traditional 15 inch handguards. The fit and finish are amazing. The drive lock system is the most stout and sturdy handguard out. Buy this with the utmost confidence. You’ll love it.