Daniel Defense MFR XL Rail Systems | Up to $26.00 Off 4.7 Star Rating w/ Free S&H

Daniel Defense 10in MFR XL Rail Systems w/ M-LOK attachments, Black 01-107-08198

Daniel Defense 9in MFR XL Rail Systems w/ M-LOK attachments, Black 01-107-08094

Daniel Defense 13.5in MFR XL Rail Systems w/ M-LOK attachments, Black 01-107-08246

Daniel Defense MFR XL 15.5 M-LOK Rail Black

Daniel Defense 10in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08198

Daniel Defense 13.5in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08246

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This item may be regulated for export by the U.S. Department of State or the U.S. Department of Commerce. Please see our Export Policy prior to placing your order.

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Daniel Defense Warranty

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Questions & Answers

What length MFR Rail would i need to swap out on my ris II mk18 ? Expert Answer

You would need the 9" Daniel Defense MFR XL Rail Systems.

by Hunter, Gear Expert, March 28, 2023

Does anyone know if this would work with the Adams Arms P-Series Pistol Length upper? Ay modifications required? Thank you! Expert Answer

The Daniel Defense MFR XL Rail Systems are not listed as being compatible by Adams Arms. I recommend contacting Adams Arms to confirm compatibility.

by Hunter, Gear Expert, April 21, 2023

View All Q&A You Have a Question? Ask!

Customer Reviews

Helpful Positive Review

Great rail by Kyle Carson, Verified Owner, June 30, 2020

I am a DD fan so when swapping out for a larger rail that would fit a suppressor this was my first choice. Super easy to install and fits perfect. The M-lok design is very lightweight. Weighs less than the previous rail even though this one is wider ...
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1/1 found this helpful

Helpful Positive Review

One of the best rails by psg127, January 25, 2019

Excellent rail at a decent price. Fit & finish was superb, DD should’ve included at least 1 mlok pic rail. Very lightweight & aesthetically appealing. The overall girth of the rail would be good for most hands, bigger hands could opt for the XL versi...
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1/1 found this helpful

Helpful Negative Review

better qc needed by j-dizzle, Verified Owner, November 3, 2023

-better installation instruction are needed. Had to contact DD for assistance. -better QC is needed. Anodizing splotch defect on a $230 rail. - DD customer care sounded generally annoyed. Had a tone like i was dumb for having questions. That’s how...
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1/2 found this helpful

Most Recent Reviews

Daniel Defense MFR XL by Chris, Verified Owner, March 21, 2026

Awesome product with excellent machining quality and very rigid design. I personally like the XL’s for the additional room under the handgaurd for various applications.

Most Recent Reviews

wrong size advertise by Bernardo Orozco, Verified Owner, November 2, 2025

They advertise it’s a 15.5 handguard but It’s not it’s a 15in handguard

Most Recent Reviews

Sturdy American Made Part by JCS, Verified Owner, October 2, 2025

I bought this to fit it over a suppressor. It is slightly the right internal diameter, but it's TIGHT. Make sure you get a slim or long can if you want to fit it.

Read All 11 Reviews

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Weight

All

Handguard Length

All

Daniel Defense 10in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08198

Weight:: 9.4 oz
Handguard Length:: 10 in

Code: DDD-HZ-MFRXL-01-107-08198

MPN: 01-107-08198

UPC: 818773020121

Free Two Day Shipping

List: ~~$349.00~~Save $25.00

$324.00

Daniel Defense MFR XL 15.5 M-LOK Rail, Black, 01-107-09195

Weight:: 6.25 oz
Handguard Length:: 15.5 in

Code: DDD-HZ-MFRXL-01-107-09195

MPN: 01-107-09195

UPC: 818773020145

List: ~~$388.00~~Save $26.00

$362.00

Daniel Defense 9in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08094

Weight:: 7.05 oz
Handguard Length:: 9 in

Code: DDD-HZ-MFRXL-01-107-08094

MPN: 01-107-08094

UPC: 818773020114

List: ~~$349.00~~Save $25.00

$324.00

Daniel Defense 13.5in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08246

Weight:: 10.4 oz
Handguard Length:: 13.5 in

Code: DDD-HZ-MFRXL-01-107-08246

MPN: 01-107-08246

UPC: 818773020138

List: ~~$361.00~~Save $26.00

$335.00

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Product Info for Daniel Defense MFR XL Rail Systems

The MFR XL Rail Systems from Daniel Defense utilize the Keymod and M-LOK attachment systems for incredible weight savings as well as superior cooling, ergonomics, and modularity while maintaining the strength and durability expected from Daniel Defense. Keymod attachment points are located on the sides, bottom, and upper 45 positions of the rail while featuring an uninterrupted 1913 Picatinny rail on top. M-LOK attachment points are located along 7 positions on the rail and feature an uninterrupted 1913 Picatinny rail on top. Its sleek bolt-up system increases strength and allows for easy installation. The increased internal diameter gives the operator the ability to attach a suppressor and have the proper clearance needed for installation. Anti-rotation tabs come standard for ease of installation and alignment. The MFR can be used with a pinned low-profile gas block on pistol, carbine, mid-length or rifle length gas systems.

Specifications for Daniel Defense MFR XL Rail Systems:

Manufacturer:	Daniel Defense
Color:	Black
Finish:	Military Specification Type III Hard Coat Anodized
Fabric/Material:	Aircraft Grade 6061-T6 Aluminum
Gun Make:	AR Platform
Gun Model:	AR-15
Gun Type:	Rifle
Gun Rail:	Picatinny
Condition:	New
Included Accessories:	Standard
Mount Type:	M-LOK
Quantity:	1

Features of:

Light Weight Free Floating Barrel Design
Steel Barrel Nut
Uninterrupted Mil-Spec 1913 Picatinny Upper Rail
M-LOK or Keymod attachments on the sides and bottom
Patented Bolt-Up Mounting System
1.61" internal diameter designed for use with suppressor
Weight Installed = 13.30 oz (with Mounting Hardware)

Package Contents:

Daniel Defense MFR XL Rail System

Daniel Defense Warranty: Guaranteed Satisfaction

All Daniel Defense products carry a 100% satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense product shows evidence of such defects, Daniel Defense will make every accommodation to fix, repair, or replace your product in the most expeditious manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer's products.

Warranty information and warranties are supplied solely by the manufacturer, and not this retailer. This retailer publishes information from the manufacturer for information purposes only, and the manufacturer is solely responsible and liable for any warranty information and warranties published by this retailer. Please reference the appropriate manufacturer documents or reach out to the manufacturer directly for full warranty terms and effective dates.

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Daniel Defense MFR XL Rail Systems Orderable Models

List of Orderable Models

Daniel Defense 10in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08198 , MPN: 01-107-08198 , UPC: 818773020121 , Code: DDD-HZ-MFRXL-01-107-08198
Daniel Defense MFR XL 15.5 M-LOK Rail, Black, 01-107-09195 , MPN: 01-107-09195 , UPC: 818773020145 , Code: DDD-HZ-MFRXL-01-107-09195
Daniel Defense 9in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08094 , MPN: 01-107-08094 , UPC: 818773020114 , Code: DDD-HZ-MFRXL-01-107-08094
Daniel Defense 13.5in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08246 , MPN: 01-107-08246 , UPC: 818773020138 , Code: DDD-HZ-MFRXL-01-107-08246

Daniel Defense MFR XL Rail Systems Unavailable & Discontinued Models

List of Unorderable Models

USED, Daniel Defense 10in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08198 , MPN: 01-107-08198-EDEMO , Code: DDD-HZ-MFRXL-01-107-08198-EDEMO-IN-C
USED, Daniel Defense 13.5in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08246 , MPN: 01-107-08246-EDEMO , Code: DDD-HZ-MFRXL-01-107-08246-EDEMO-IN-B
Daniel Defense MFR XL KeyMod Rail System, 10in, 01-107-01203 , MPN: 01-107-01203 , UPC: 815604019859 , Code: DDD-HZ-MFRXL-01-107-01203
Daniel Defense MFR XL KeyMod Rail System, 9in, 01-107-14192 , MPN: 01-107-14192 , UPC: 815604019880 , Code: DDD-HZ-MFRXL-01-107-14192
Daniel Defense MFR XL KeyMod Rail System, 13.5in, 01-107-10233 , MPN: 01-107-10233 , UPC: 815604019866 , Code: DDD-HZ-MFRXL-01-107-10233
USED, Daniel Defense MFR XL 15.5 M-LOK Rail, Black, 01-107-09195 , MPN: 01-107-09195-EDEMO , Code: DDD-HZ-MFRXL-01-107-09195-EDEMO-SC-C
DEMO, Daniel Defense 9in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08094 , MPN: 01-107-08094-DEMO , Code: DDD-HZ-MFRXL-01-107-08094-DEMO
DEMO, Daniel Defense 10in MFR XL Rail Systems w/ M-LOK attachments, Black, 01-107-08198 , MPN: 01-107-08198-DEMO , Code: DDD-HZ-MFRXL-01-107-08198-DEMO-OB-A
Daniel Defense MFR XL KeyMod Rail System, 15in, 01-107-15042 , MPN: 01-107-15042 , UPC: 815604019873 , Code: DDD-HZ-MFRXL-01-107-15042
USED, Daniel Defense MFR XL 15.5 M-LOK Rail, Black, 01-107-09195 , MPN: 01-107-09195-EDEMO , Code: DDD-HZ-MFRXL-01-107-09195-EDEMO-RE-B

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Product Info for Daniel Defense MFR XL Rail Systems

Specifications for Daniel Defense MFR XL Rail Systems:

Features of:

Package Contents:

Daniel Defense Warranty: Guaranteed Satisfaction

Daniel Defense MFR XL Rail Systems Orderable Models

List of Orderable Models

Daniel Defense MFR XL Rail Systems Unavailable & Discontinued Models

List of Unorderable Models

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More Deals

Daniel Defense MFR XL Rail Systems Up to $26.00 Off — Free 2 Day Shipping w/ code 2DAYAIR — 4 models

Free Express Shipping!

Product Info for Daniel Defense MFR XL Rail Systems

Specifications for Daniel Defense MFR XL Rail Systems:

Features of:

Package Contents:

Daniel Defense Warranty: Guaranteed Satisfaction

Daniel Defense MFR XL Rail Systems Orderable Models

List of Orderable Models

Daniel Defense MFR XL Rail Systems Unavailable & Discontinued Models

List of Unorderable Models