The Super Modular Rail SMR MK4 MLOK are purposebuilt and feature integrated M1913 picatinny rail sections at the fore of the rail in the 3, 6 and 9 oclock positions. It also features Geisseles proprietary 2 long barrel nut.
Geissele Automatics MK4 Super Modular Rail 13″ MLOK includes Stainless Steel Gas Block Black 05-278B
Out of stock
Shipping Destination Restrictions
I understand that Short Round Supply Company does not ship outside the United States, or to Alaska, Hawaii, Massachusetts, New York, California, Cook County, IL, or any other area within the United States where Short Round Supply Company is prohibited by federal, state, or local law to ship product. I also understand that if I attempt to have product shipped to these restricted areas, my order will be cancelled and I will be subject to paying a cancellation fee as described below.
Federal, State, and Local Laws Relating to Ammunition Purchases:
We comply with ALL local, state, and federal laws. The following list of state and local laws is NOT represented to be all inclusive of the 50 states’ numerous firearms, ammunition, and magazine laws. You must be aware of any laws affecting your purchase.
ALASKA CUSTOMERS: No sales.
CALIFORNIA CUSTOMERS: No ammunition sales.
CONNECTICUT CUSTOMERS: A legible copy of state issued identification and one of the following is required to purchase ammunition:
A valid CT permit to carry a pistol or revolver OR
A valid CT long gun eligibility certificate OR
A valid CT ammunition certificate.
HAWAII CUSTOMERS: No sales.
ILLINOIS CUSTOMERS: Must have current copy of FOID card and State Photo Identification, No sales of ammunition and/or magazines to the City of Chicago.
NEW YORK CUSTOMERS: Due to New York State law, we can no longer ship ammunition purchased online to NY residents (we will still ship to FFL’s and Seller of Ammunition permits)
NEW JERSEY CUSTOMERS: Firearms/Ammunition identification card & State ID must accompany ammunition orders for first time. No sales of magazines over 15 rounds.
WASHINGTON DC CUSTOMERS: No Sales of any products.
US TERRITORIES OF GUAM, PUERTO RICO, and VIRGIN ISLAND CUSTOMERS: No sales.
MASSACHUSETTS: Due to Massachusetts State law, we can no longer ship ammunition purchased.