Cross Machine Tool 

ARCA Profile Handguard

Cross Machine Tool (CMT) has released a new handguard, something that stands out in the sea of rails already on the market. The top rail is Picatinny/1913, with m-lok on the other three sides. The twist is that the rail’s bottom is ARCA-compatible, meaning your rail directly and securely attaches to your tripod. Obviously you need to make sure you have an ARCO head on your tripod, but it’s an inexpensive conversion if you have to change it over. In our case, a quick search on Amazon got us the piece for under $30. A quick trip to your local camera store would probably yield the same thing.  

If you aren’t a tripod shooter, you might find the wide bottom sits nicely on your pack. Another nice feature is that the new ARCA-profile CMT rail uses the same barrel nut as CMT’s other rails. We swapped out our standard CMT rails and upgraded to the ARCA in just a few minutes.

Available in 11.5, 13, 15, and 17-inch formats. Details include:

  • 6000 series extruded aluminum, Mil-Spec Type 3 Class 2 hard anodized
  • 7075 aluminum barrel nut, Type 3 Class 2 hard anodized
  • Patented 17-4PH cored stainless steel rail mounting attachment
  • Anti-rotate tabs to time rail to upper receiver
  • ARCA Swiss profile rail integrated at 6 o’clock
  • No barrel nut shims required for installation
  • 1.315” inner diameter, 1.378” barrel nut diameter
  • m-lok slots at 1, 3, 6, 9, 11 o’clock positions
  • Included barrel nut wrench
  • Compatible with most known low-profile gas blocks; does not contact or apply side loads to gas tube
  • 15.8-ounce total weight including mounting hardware and barrel nut
  • Made & assembled in USA

MSRP: From $199

Related posts


DT Carbine Stock (Mil-Spec) Magpul’s new Dual Tension (DT) system is engineered to…
Read more

Dead Foot Arms

AR9 Uppers The Dead Foot Arms AR9 uppers—AR9-SD and AR-MP9—are assembled as complete…
Read more

Tisas USA

Night Stalker SF 9DS Designed for optimal performance in low-light environments, this Tisas…
Read more
Subscribe to our

Sign up for our news letter and see behind the scenes of the latest issue along with the coolest, most exciting products coming your way!