Geissele Automatics AR-15 Super Modular Rail MK4 15" M-LOK Aluminum Black 05-315B [FC-854014005731]

Geissele Automatics AR-15 Super Modular Rail MK4 15" M-LOK Aluminum Black 05-315B [FC-854014005731]

Geissele Automatics, LLC


Out of Stock

Don't forget to send in your  Firearms Sales Form [PDF]  or  Select FFL Dealer

Geissele Automatics, LLC

UPC
854014005731
SKU
ARR-295-026
Geissele Automatics was established in 2004 as a manufacturer of trigger mechanisms for the AR-15 rifle. Gesssele products quickly became the trigger of choice for M4 carbine based weapons by many U.S. Special Forces entities. Rely on Geissele when you expect superior performance, quality, and reliability.

The Geissele Automatics Super Modular rail MK4 was designed to be a lightweight modular rail system that also provides you with Magpul M-LOK attachment points in several locations along the length of the rail. The MK4 features an ergonomic design, with a flexible and modular set up procedure. The free floating design is strong and rigid, and features an integrated M1913 Picatinny rail section at 3, 6, and 9 o'clock. Accessory rails are easy to install and do not require a gunsmith. However if you do not have the required tools or mechanical know how you should seek the help of an expert. The SMR MK4 also features Geissele's proprietary 2.25" long barrel nut. This increases the surface contact where the rail interfaces with the receiver and creates a platform that can be trusted to be straight and true the entire length of the free float rail. This increases accuracy and zero repeatability during disassembly and reassembly when performing maintenance.

Features and Specifications:
Manufacturer Number: 05-315B
Geissele Automatics AR-15 15" Super Modular Rail MK4 M-LOK Black
Length: 15"
MK4 Inner Diameter: 1.35"
MK4 Outer Diameter: 2.11"
MK4 with Magpul M-LOK attachment system
Picatinny rails sections at 3, 6, and 9 o'clock
Ergonomic
Free Floating
Modular
Installed Weight: 15.4oz
Proprietary 2.25" long barrel nut
Lightweight, Strong and Rigid
Color: Black

Fits:
AR-15 Upper Receivers



Note: MK4 rails are designed to work with Mil-Spec M4 upper receivers. The compatibility with billet receiver sets is unknown.
Buying a Firearm Online is Easy!
  • Add your selected firearm(s) to your shopping cart and check out.
  • Select a local Federal Firearms Licensed (FFL) Dealer that will accept the firearm and complete the transfer. Find a FFL Dealer HERE.
  • If you choose an FFL Dealer that is not on our preferred list, you or your FFL Dealer will be required to fax or email us a signed copy of the Federal Firearms License referencing your Cheaper Than Dirt! order number. Download the Firearm Sales Form
  • Pick up your firearm from the FFL Dealer, who will need to do a criminal and mental health background check. Transfer fees may apply.
Buying Firearms on the Internet

Federal law requires firearms to be shipped to FFL Dealers. For an individual to receive a firearm from Cheaper Than Dirt! it must be shipped to an FFL Dealer in your state.

Locating a Federal-Firearm License Dealer (FFL) in Your Area

There are thousands of FFL Dealers in the United States. You may choose an FFL Dealer from our preferred listing or you may find a dealer in your area. To find a list of FFL Dealers in your area area CLICK HERE. If you choose a dealer that is not on our preferred list, either you or the FFL Dealer will be required to submit a copy of the Federal Firearms License referencing your Cheaper Than Dirt! order number. The FFL Dealer will usually charge a fee to conduct the transfer. There are duties that the FFL Dealer is required to do during the process which include a criminal and mental health background check through NICS. Remember, the FFL Dealer is doing you a favor and the process takes time to complete. Fees can vary so check with the FFL Dealer ahead of time to request a quote on the fees associated with your firearm transfer. The FFL Dealer is in business to make a profit and your internet purchase may be viewed as competition to their retail business. If you feel the fees are too high, you can search for another FFL Dealer.

Completing the Transaction

Once you place the firearm in your cart and checkout you will receive a confirmation email that has your order number and further instructions. We will verify the FFL license and also make the FFL Dealer aware that an order from Cheaper Than Dirt! will soon be arriving for you. Most orders are processed within 2-3 business days from the time we receive and verify the FFL Dealers information. Once shipped, your firearm will arrive at the FFL Dealer within 3-7 days business days. The FFL Dealer will begin processing the shipment. It may be an additional day or so before the FFL Dealer is ready to conduct the transfer of the firearm to you. Call the FFL Dealer and set an appointment to confirm that the firearm is ready to be transferred.

Please note! All Firearm Sales are Final

It is important to thoroughly inspect your firearm before completion of the transfer. Once the firearm is transferred into your name, Cheaper Than Dirt! will not accept a return or exchange under any circumstance. If a defect is discovered after completing the transfer, you must contact the manufacturer directly for repair or replacement.

Geissele Automatics was established in 2004 as a manufacturer of trigger mechanisms for the AR-15 rifle. Gesssele products quickly became the trigger of choice for M4 carbine based weapons by many U.S. Special Forces entities. Rely on Geissele when you expect superior performance, quality, and reliability.

The Geissele Automatics Super Modular rail MK4 was designed to be a lightweight modular rail system that also provides you with Magpul M-LOK attachment points in several locations along the length of the rail. The MK4 features an ergonomic design, with a flexible and modular set up procedure. The free floating design is strong and rigid, and features an integrated M1913 Picatinny rail section at 3, 6, and 9 o'clock. Accessory rails are easy to install and do not require a gunsmith. However if you do not have the required tools or mechanical know how you should seek the help of an expert. The SMR MK4 also features Geissele's proprietary 2.25" long barrel nut. This increases the surface contact where the rail interfaces with the receiver and creates a platform that can be trusted to be straight and true the entire length of the free float rail. This increases accuracy and zero repeatability during disassembly and reassembly when performing maintenance.

Features and Specifications:
Manufacturer Number: 05-315B
Geissele Automatics AR-15 15" Super Modular Rail MK4 M-LOK Black
Length: 15"
MK4 Inner Diameter: 1.35"
MK4 Outer Diameter: 2.11"
MK4 with Magpul M-LOK attachment system
Picatinny rails sections at 3, 6, and 9 o'clock
Ergonomic
Free Floating
Modular
Installed Weight: 15.4oz
Proprietary 2.25" long barrel nut
Lightweight, Strong and Rigid
Color: Black

Fits:
AR-15 Upper Receivers



Note: MK4 rails are designed to work with Mil-Spec M4 upper receivers. The compatibility with billet receiver sets is unknown.
Product added to cart
Product added to cart
We are unable to fulfill the total quantity that you have requested. Please review the adjusted available quantity.

Recommended for you