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NOTE: Gunsmithing Services are invasive and will most often (directly with tooling or indirectly with work holding) damage existing surface finishes on parts such as receivers. LRI offers a full menu of finish options for your components, please ensure you have also added an appropriate finish option to your cart if applicable.

Finish Options

Cerakote (most popular)
Parkerize Carbon Steel Action
Parkerize Carbon Steel Bolt
Glass Bead Stainless

GUNSMITHING SERVICES: MK13 Mod 5 Muzzle work for Knight Armament MK11 PN: 98440 Suppressor

  • $ 26500

The MK13 platform is a popular rifle among collectors.  The Knight Armament suppressors are unique, and machining a barrel to retain them properly demands careful machine work.

We've answered that need through automation.  LRI has developed a cutting-edge process that adapts to the manufacturing variances common to the MK11 suppressor.  We precisely locate the registration pin and milled slots on the barrel to ensure that the suppressor purchases concentric to the bore with no "rattle."  Doing so ensures the platform delivers the accuracy expected of a precision rifle.


This is a service that requires you to send us your suppressor.  Due to the manufacturing variances common to the product, LRI will not perform this service without it.