CMMG 57DF1C7 PS90 Barrel 5.7x28mm 10.4in

Description

The CMMG 57DF1C7 is a 10.4-inch barrel sub-assembly designed for FN PS90 platforms and chambered for 5.7x28mm. It is built from 4140 chrome-moly-vanadium steel and uses a 1:9 twist rate suited to the cartridge. The barrel is threaded with metric M12x1.0 left-hand muzzle threads for PS90-compatible muzzle accessories. Sources differ on the external surface treatment; see notes for details.

Key Specifications

• The barrel measures 10.4 inches.
• Chambered for 5.7x28mm.
• Constructed from 4140 Chrome Moly Vanadium.
• Salt Bath Nitride Finish
• Features a 1:9 twist.
• The muzzle threads are M12x1.0 LH.
• Threaded status: Yes.
• Fitment: FN PS90.
• Barrel profile: Medium taper.
• Barrel type: Pistol Length.
• Sights: No.

Purpose-built for PS90 projects, this sub-assembly provides the core specifications needed for a compact barrel setup. Its length, twist rate, and threading make it compatible with common PS90 muzzle accessories and conversions; the 4140 CMV core delivers long-term strength for routine use. Consider this barrel when assembling a compact, duty-oriented PS90 build where correct specifications and component compatibility are priorities.