FM 23-9 Rifle 5.56-MM, XM16E1: Mechanical Training & Marksmanship Training Paperback – September 11, 2025

1. Purpose and ScopeThis manual provides guidance for presenting instruction with the Rifle, 5.56-mm, XM16E1. It contains a detailed description of the rifle and its general characteristics, procedures for disassembly and assembly, operation and functioning of the rifle, types of ammunition, and maintenance. When supplemented by FM 23-71 and FM 23-16, it provides information in sufficient detail for conducting marksmanship training with the rifle. This manual is applicable to both nonnuclear and nuclear warfare.2. Responsibilities of CommandersUsers of this manual are encouraged to submit recommended changes or comments to improve the manual. Comments should be keyed to the specific page, paragraph, and line of text in which the change is recommended. Reasons should be provided for each comment to ensure understanding and complete evaluation. Comments should be forwarded directly to the Commandant, U.S. Army Infantry School, Fort Benning, Ga., 31905.RIFLE, 5.56-MM, XM16E1Table of ContentsCHAPTER 1. INTRODUCTION - Section I. General • 1, 2 • Page 3 Section II. Characteristics • 3, 4 • Page 3CHAPTER 2. MECHANICAL TRAINING - Section I. Disassembly and Assembly • 5-8 • Page 6 Section II. Operation and Functioning • 9, 10 • Page 17 Section III. Care and Cleaning • 11-13 • Page 27 Section IV. Stoppages and Immediate Action • 14, 15 • Page 30 Section V. Ammunition • 16-18 • Page 30 Section VI. Destruction of Materiel to Prevent Enemy Use • 20, 21 • Page 31CHAPTER 3. MARKSMANSHIP TRAINING - Section I. Preparatory Marksmanship • 22-25 • Page 32 Section II. Automatic Fire • 26-29 • Page 55CHAPTER 4. SIGHT ADJUSTMENT AND BATTLESIGHT ZERO - Section I. Sight Adjustment • 30-33 • Page 64 Section II. Battlesight Zero • 34-36 • Page 65APPENDIX. REFERENCES • Page 6 Read more