Semiauto SAR-80 "Sterling Assault Rifle" at the Range

Published on November 29, 2025
Duration: 7:25

This guide details the field stripping and reassembly of the SAR-80, a semi-automatic rifle based on the AR-18 design. Expert Ian McCollum demonstrates the process, highlighting its simplicity and the dual recoil spring system. The SAR-80 is noted for its stamped steel construction and short-stroke gas piston operation, making it a robust, no-frills military firearm.

Quick Summary

The SAR-80 is a semi-automatic rifle based on the AR-18, designed for simplified manufacturing. It uses a short-stroke gas piston, a dual recoil spring system, and stamped steel receivers. Chambered in 5.56x45mm NATO, US rebuilds accept standard AR-15 magazines. It was produced by CIS and adopted by the Singaporean Army.

Chapters

  1. 00:00Introduction to the SAR-80
  2. 00:55Manufacturing and Global Adoption
  3. 01:37US Semi-Auto Rebuilds
  4. 02:21Range Performance
  5. 03:04Design Features and Finish
  6. 04:13Disassembly and Internal Mechanics
  7. 05:54Final Assessment

Frequently Asked Questions

What is the SAR-80 and who designed it?

The SAR-80 is a semi-automatic rifle based on the AR-18 design, simplified for easier manufacture. It was initially conceived by Frank Waters at Sterling in the 1960s and later produced by Chartered Industries of Singapore (CIS).

What caliber does the SAR-80 use and what magazines does it accept?

The SAR-80 is chambered in 5.56x45mm NATO. Semi-automatic rebuilds in the US, like the one featured, are noted to accept standard AR-15 magazines.

What are the key internal mechanics of the SAR-80?

The SAR-80 features a short-stroke gas piston system and a dual recoil spring system, similar to the AR-180. Its receivers are constructed from stamped steel for durability and ease of production.

Where was the SAR-80 manufactured and adopted?

The SAR-80 was primarily manufactured by Chartered Industries of Singapore (CIS) starting in 1978. It was adopted by the Singaporean Army in 1981 and exported to several countries, including Taiwan and Papua New Guinea.

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