O003196.5 Grendel engravingP1050463ss

6.5-8 Grendel AR319 Fluted


At the time of our 6.5 Grendel barrel introduction (January 2014) we are making these available in three contours. These are the AR740 and AR 24 contours shown above as standards for the 204’s and .223’s and in addition we are also stocking one mid-length gas system contours; our 19″ long 319 contour. To see drawings of these contours click on the designation: AR740,AR24 ,319. The 740, 319, and AR 24 profiles are also available in a fluted version. All 6.5 Grendel barrels are threaded at the muzzle with a 5/8″-24 thread – (although the linked drawings above may show 1/2-28). Weight is 2.16 pounds.

The 6.5 Grendel barrels are headspaced using a Maxim Firearms bolt. Headspace may not be correct with our barrel using an Alexander Arms or LBC bolt.

We also have for sale a 6.5 Grendel bolt made by Maxim Firearms. This bolt is a perfect match for our 6.5 Grendel barrels.

Machined from certified 9310 AQ (aircraft quality) steel

Matte black; phosphate finish

Completely assembled with extractor, rings, and ejector, ready for installation into your bolt carrier

Also referred to as “Type II” bolt which has a .136″ bolt face depth

Barrel extensions are an M4 type.

We also keep fluted version of these in stock. There are five flutes on the front section, leaving a missing flute where the barrel is engraved and six flutes on the back section. Fluting adds $130 to the price.

In stock

Product Description

The 6.5 Grendel is chambered with a semi-auto match-type chamber. These barrels are threaded for and furnished with a pinned barrel extension with proper headspace and the gas port hole drilled and an 11º target crown in a match grade barrel. We are milling a narrow flat on the bottom side of the gas port section for set screws used with some types of gas blocks. This prevents marring of the .750″ or .936″ diameter by the set screws and helps align the gas block with the gas port hole. All current production drop-in barrels use an M4 style barrel extension. The front section of the barrel is engraved with “Lilja 6.5 Grendel 8T”. Just add your gas block and tube and drop into your upper receiver.


This image shows the three AR-type contours that we are keeping in-stock as a drop-in type barrel (muzzle threading is standard but not shown in image). The top contour is our AR24 contour, the middle one is our AR740 with the Wasp weight reduction section turned on the .975″ diameter. The bottom contour is the carbine length gas system M-4.


Additional Information

Weight 5 lbs
Dimensions 24 x 1.5 x 1.5 in