PWS MK118 MOD 2-M Upper, 6mm ARC 18″

The PWS MK118 MOD 2-M upper is offered in a 6mm ARC configuration with an 18" barrel and threaded muzzle as shown in the source data. It is presented as an AR-15 pattern upper assembly suitable for precision-oriented builds on compatible platforms. The listing and images indicate the MK118 MOD 2-M variant and identify the product as an upper assembly.

Key Specifications

• This is an upper assembly: PWS MK118 MOD 2-M.
• Chambering is listed as 6mm ARC (as provided in the product name).
• The barrel length is specified as 18 inches in the source name string.
• The muzzle is listed as LS threaded (designation taken verbatim from the provided name).
• The product category is AR-15 uppers, indicating AR-pattern compatibility.
• The manufacturer is listed as PWS (Primary Weapons Systems).
• The listed weight value is 5.65 (unit not specified in the source data).
• The product name variants provided include "PWS MK1-M2U-6ARC18NC" and "PWS MK118 MOD 2-M UPPER 6MM ARC 18 LS THREADED".

This upper provides a factory-identified MK118 MOD 2-M option in 6mm ARC with an 18" threaded barrel for builders prioritizing an AR-pattern platform that accepts match-oriented cartridges. Its specification set and build form make it suitable for precision-oriented use within compatible systems; review the detailed specs to confirm fit and compatibility with your host rifle and intended application.