From Meh to Monster -- Creating the Ultimate Zastava M85

Published on February 15, 2026
Duration: 11:29

This guide details the process of transforming a Zastava M85 into a highly customized rifle, focusing on upgrades from JMac Customs. The modification involves installing an MMS handguard, magwell funnel, folding brace system with an SB Tactical SBA5, and a JMac muzzle device with a Zvuk suppressor. The presenter, Mark from Fit'n Fire, highlights the integration of modern components with the traditional AK platform, emphasizing improved ergonomics and functionality for competitive shooting.

Quick Summary

The ultimate Zastava M85 build features a JMac Customs MMS 8-inch handguard, requiring the removal of the factory retaining bracket. It also includes a JMac magwell funnel for faster reloads, an SB Tactical SBA5 brace for comfort, and a JMac Micro RD360 muzzle device with a Zastava Zvuk suppressor.

Chapters

  1. 00:00Introduction: The Ultimate Zastava M85 Project
  2. 00:30Build Overview: JMac Customs Upgrades
  3. 01:30Range Performance & Community Input
  4. 02:45JMac Customs MMS Handguard Installation
  5. 04:45Magwell Funnel & MMS Integration
  6. 06:15Rear Section: Brace and Folding Mechanism
  7. 07:06Muzzle Device and Suppressor Setup
  8. 08:02Competition Prep: Kalash Bash
  9. 09:30Optics and Final Thoughts

Frequently Asked Questions

What are the key upgrades for the Zastava M85 in this video?

The Zastava M85 is upgraded with a JMac Customs MMS 8-inch handguard, a JMac magwell funnel, a Stormwerkz picatinny section, a JMac folding mechanism, an SB Tactical SBA5 brace, and a JMac Micro RD360 muzzle device with a Zastava Zvuk suppressor.

What modification is needed to install the JMac Customs MMS handguard?

Installing the longer JMac Customs MMS handguard on the Zastava M85 requires cutting off the factory handguard retaining bracket. This is a necessary step to accommodate the new handguard's length and mounting system.

What is the purpose of the JMac magwell funnel on this build?

The JMac magwell funnel is integrated with the MMS handguard to significantly improve reload speed. It guides the magazine into place more effectively, reducing time spent during reloads in dynamic shooting situations.

How does the SB Tactical SBA5 brace compare to the SBA3?

The SB Tactical SBA5 brace is described as being slightly wider than the SBA3, offering a more comfortable and potentially stable shooting experience. It attaches via a folding mechanism for compact storage.

More Gunsmithing & DIY Videos You Might Like

More from Fit'n Fire

View all →