MMS - AK-102 | 104 | 105 with 12.5" Barrels and 24-1.5 Threads

The JMAC Modular Mounting System (MMS) for 102, 104, and 105 pattern firearms with a 12.5” barrel and 24-1.5 threads.

The JMAC Customs™ Modular Mounting System (MMS) is a modular, customizable solution for Kalashnikov-pattern firearms, designed for professionals, competition shooters, and recreational shooters. Available in multiple lengths, it allows you to configure your setup with optic mounts, railed dust covers, mag funnels and more.

Key Features:

• Modular Design: Choose from various lower handguard lengths and upper options
  
• Free Float System: Clamps to the barrel at the rear, having no contact with the receiver, preserving barrel  harmonics for better accuracy
  
• Durable Construction:* Lower Mount: 7075-T6 aluminum type 3 hard coat anodized
  
• Upper Mount: 4140 Heat Treated Steel QPQ black nitride finish
  
• Handguard: 6005-A/T-6 aluminum aluminum type 3 hard coat anodized
  
• Gas Tube Compatibility: Replaces factory gas tubes; 1913 gas tube extends over the gas block
  
• M-Lok Slots: Slots at the 3, 6, and 9 o’clock positions, in line with bore
  
• Minimal Zero Loss: Can remove and replace the gas tube with minimal effect on optic zero.

Specs:

• Length: Available in multiple lengths
  
• Inside Diameter: 1.3 inches
  
• Outside Diameter: 1.5 inches
• Compatibility: Fits stamped and milled receivers, compatible with factory gas tubes and cleaning rods
  
• This version of the MMS is designed to work with the factory sling loop in place and does not require modification of your firearm
• For installation details and fitment, see our blog post here.

Recommended Upgrade:

RC-QD Retainer Cover & QD Sling Mount – For handguards with a sling loop cut, we recommend adding the RC-QD Retainer Cover and QD Sling Mount. This upgrade reinforces the cutout, restoring handguard rigidity, protecting against burns from the steel handguard retainer, and providing a modern QD sling attachment point for convenience.

HG-RM Rigid Mount – If you're mounting a laser or other zero-dependent device, the HG-RM Rigid Mount is essential. This upgrade anchors the handguard to the barrel, creating a solid mounting platform for accessories. It also enhances the overall feel of the handguard, providing a more rigid experience. Multiple sets can be used for customized rigidity.

Note: Adding this accessory eliminates the free-float design, which may impact long-range accuracy.