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Questions & Answers
Is this gas block adjustable? For this price they should have better descriptions. Expert Answer

The Geissele Super Gas Block is not adjustable. Per Geissele, effective 3/31/20 Geissele will no longer include the gas blocks with the rails.

by Armando R., Gear Expert, January 4, 2019
Does this come with the new version's steel QD socket reinforcements, or is this the old version? Expert Answer

Geissele does not state that the Geissele 9.3in Super Modular Rail MK4 M-LOK comes with steel QD socket reinforcements.

by Hunter, Gear Expert, August 4, 2022
Customer Reviews
Helpful Positive Review
Very nice handguard by Dave, Verified Owner, February 10, 2021
Looks great, does its job. You can mount different things out front with picatinny rails on all 4 corners. Dont understand those 1 star ratings. Overlook them for sure. Geissele is top notch as always.
1/1 found this helpful
Helpful Positive Review
SMR MK4 Desert Dirt by JLee, March 16, 2016
Product is spot on! Very high quality machining, very tight fit and super light weight. The desert dirt color is a shade lighter than burnt bronze. I was new to the M-Lok system was hesitant to go from keymod to M-Lok now in the process of changing e...
Read More...
1/1 found this helpful
Helpful Negative Review
Geissele Rail by Pedro, Verified Owner, June 1, 2020
This rail looks really good and feels good. But does not comes with the gas block in the picture. I wish I would’ve said or give a warning that it didn’t come with it so I would’ve bought it when I bought the rail. So now I have to order a gas block ...
Read More...
8/38 found this helpful
Most Recent Reviews
Great Handguard by Fast Rick, October 25, 2025
Top notch build quality and the finish was flawless!
Most Recent Reviews
Banged up and missing parts... by JT, Verified Owner, April 8, 2019
I received this handguard, with small minor scratching near the front of the hand guard. I was willing to overlook that as I’m sure it won’t be pristine forever. That being said, when I attempted to wrap up the install, that’s when I noticed it was...
Read More...
2/28 found this helpful
Most Recent Reviews
very nice rail by Derik, Verified Owner, September 28, 2024
this is a very sturdy rail. much better than many ive used.
Read All 9 Reviews
Color:
DDC
Finish:
Type III Hardcoat Anodized
Gun Make:
AR Platform
Gun Model:
AR-15
Handguard Length:
9.3 in
Gun Rail:
Picatinny
Included Accessories:
Standard
Inner Diameter:
1.35 in
Outer Diameter:
2.11 in
Height:
2.4 in

Code: 1TO-HZ-05-283S

MPN: 05-283S

UPC: 854014005700

List: $325.00Save 29%
$229.49

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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 Geissele 9.3in Super Modular Rail MK4 M-LOK

When you want to build a functional, tactical AR-15, you need AR Handguards & Forends to complete the build. The 9.3 inch MK4 Super Modular Rail system from Geissele features a slim, lightweight design with a free-floating handguard that is designed for regular use. With Picatinny rails and M-LOK connections, you have plenty of options to mount iron sights, sport optics, foregrips, and more, letting you customize the weapon for your unique needs.image

This design also comes with Geissele's proprietary 2.25-inch barrel nut design, which increases rigidity between the rails and receiver. Since it has more surface contact than other barrel nuts, you don't have to worry about the system loosening over time. This ensures your optics stay in the same position, increasing your accury.

WARNING: California`s Proposition 65

Specifications for Geissele 9.3in Super Modular Rail MK4 M-LOK:

Manufacturer: Geissele
Color: DDC
Finish: Type III Hardcoat Anodized
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Handguard Length: 9.3 in
Handguard Type: Free-Float
Gun Rail: Picatinny
Included Accessories: Standard
Inner Diameter: 1.35 in
Outer Diameter: 2.11 in
Height: 2.4 in
Mount Type: M-LOK
Country of Origin: USA
Quantity: 1

Features of Geissele 9,3inch Super Modular Rail MK4:

  • Type III Hardcoat Anodized Finish
  • 2.25-inch Barrel Nut Design
  • Free-floating Handguard
  • Picatinny Rails
  • M-LOK Connections

Package Contents:

  • Geissele Super Modular Handguard Rail MLOK MK4 9.3in

Geissele 9.3in Super Modular Rail MK4 M-LOK Orderable Models

List of Orderable Models

  • Geissele 9.3in Super Modular Rail MK4 M-LOK, AR-15, DDC, 05-283S , MPN: 05-283S , UPC: 854014005700 , Code: 1TO-HZ-05-283S
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