Over-Upgrading The Arsenal SAM5 (SureShot USA Mk-3 Chassis)

Published on October 30, 2025
Duration: 8:59

This video details an extensive 'over-upgrade' of an Arsenal SAM5 rifle, focusing on the installation of the SureShot USA Mk-3 Chassis. The build incorporates high-end components like an ALG AKT-UL trigger, B5 Systems furniture, and an EOTech optic, transforming the base AK platform into a modern, modular rifle. The final range test demonstrates the upgraded rifle's reliability and flat-shooting characteristics.

Quick Summary

The SureShot USA Mk-3 Chassis is an aftermarket upgrade for AK-pattern rifles like the Arsenal SAM5, providing a free-float rail system for modular accessory mounting and improved ergonomics, transforming the traditional AK into a modern firearm.

Chapters

  1. 00:00Introduction: Arsenal SAM5 Base Rifle
  2. 00:31Disassembly & ALG Trigger Install
  3. 02:31SureShot USA Mk-3 Chassis Installation
  4. 04:11Furniture & Accessories: B5, EOTech, JMac
  5. 06:37Build Overview & Custom Work
  6. 07:35Range Testing: Upgraded SAM5 Firing

Frequently Asked Questions

What is the SureShot USA Mk-3 Chassis?

The SureShot USA Mk-3 Chassis is an aftermarket upgrade for AK-pattern rifles like the Arsenal SAM5. It provides a free-float rail system, allowing for modular accessory mounting and improved ergonomics, transforming the traditional AK into a more modern firearm platform.

What trigger was installed on the Arsenal SAM5?

An ALG AKT-UL (Ultimate) trigger was installed. This single-stage trigger requires some minor fitting and grinding when used in a milled receiver AK, such as the Arsenal SAM5, to ensure optimal performance and reliability.

What furniture and accessories were used in the SAM5 build?

The build featured B5 Systems furniture, including their AK grip and Modular Platform Stock. An EOTech EXPS3 optic on a Unity riser, a JMac Customs muzzle brake, and an M13 Industries charging handle were also added.

How did the upgraded Arsenal SAM5 perform at the range?

The upgraded Arsenal SAM5 demonstrated flat-shooting characteristics and reliability during range testing. It performed well both with and without a suppressor, showcasing the effectiveness of the chassis and component upgrades.

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