Military rifle and carbine manuals, along with manuals for some civilian variants of military rifles/carbines. 

Bear in mind that a civilian variant's manual may be missing crucial information regarding the proper use and maintenance of the military original and should not be considered an accurate guide in such circumstances.  All documents are in English and .PDF format unless specifically stated otherwise.

AUSTRIA

• Steyr AUG (StG 77) dienstbehelf fur das Bundesheer, VersNr. 7610-10056-0296, Bundesministerium Landesverteidigung, Marz 1996 (German, 14 pgs, 1.9 MB)
  

BELGIUM

• FN FAL/LAR User's Manual (42 pgs, 463 KB)
• FN FAL User's Manual (51 pgs, 14.9 MB)
• FN Light Automatic Rifle Cal 7.62 mm (FN FAL/LAR) User's Manual (23 pgs, 2 MB)
• FN Model 49 Self-Loading Rifle User's Manual (53 pgs, 1.8 MB)

CHINA

• Norinco 84S Series 5.56mm Semi-Automatic Rifle Instruction Manual (9 pgs, 795KB) 
  
• Norinco Type 86S (bullpup AK) 7.62x39 Semi-auto rifle manual (8 pgs, 1.2MB)

CZECHOSLOVAKIA

• Ceska Zbrojovka CZ Mod. 58 Instruction Manual (31 pgs, 1.5 MB)
• Sa vz. 58 Sporter Rifle Instruction Manual (43 pgs, 6.13 MB)

GERMANY

• FN Mauser Model 98 Rifle and Carbine Operator's Manual (28 pgs, 1 MB)
• Heckler & Koch G36 / G36 K - User's Manual (German, 39 pgs, 2.75 MB)
  
• Mitchells Mauser 98K, M48 Owner's Manual (20 pgs, 295 KB)

HUNGARY

• AMD-65 Manual (Hungarian, 16 pgs, 2.4 MB)
• AMD 65 & AKM 63 Repair (javitasa) Manual (Hungarian, 69 pgs, 7.5 MB)
• Hungarian AKM semi-automatic sporter Instruction and Safety Manual - published by Kassnar Arms (22 pgs, 4.3 MB)
  

ISRAEL

• IMI Galil Models ARM, AR & SAR Operator's Manual (33 pgs, 1.8 MB)
  

ROMANIA

• Romak-3 Dragunov (PSL) 7.62x54R Instruction Manual (7 pgs, 790KB) 
  

RUSSIA/USSR

• 7.62-mm Kalashnikov Rifle (AK) Service Manual (85 pgs, 4.6 MB)
• AK47 US Army Operators Manual v1 - 203rd MI Battalion (24 pgs, 2.5 MB)
• AK47 US Army Operators Manual v2 - 203rd MI Battalion (42 pgs, 2.65 MB)
• M59/66 Yugoslavian SKS Instruction Manual (12 pgs, 1.6 MB) by Inter Ordnance
• Mosin-Nagant Rifles, Carbines & Sniper Rifles Manual (37 pgs, 3 MB) for models 1891, 1910, 1891/30, 1938 & 1944.  ORDI 7-101 by Ordnance Corps, USA, May 1954
• SKS Rifle Simonov Type 56 Training Circular (23 pgs, 900 KB) document TC 9-56, Department of the Army, Washington, October 1969
• SKS Instruction Manual (11 pgs, 1.1 MB) by China Sports Inc. in Ontario, California
• SKS Shooting & Maintenance Instruction Manual (11 pgs, 1.7 MB)
• SVD (Dragunov sniper rifle) Technical Description and Service Manual; civilian compilation (27 pgs, 401 KB)
• Tokarov Rifles & Carbines (incl. SVT) - US Army Ordnance Corps, May 1954 (23 pgs, 575 KB)

SPAIN

• CETME 501 .308 semi-auto Instruction Manual from Century Arms (5 pgs, 132 KB)
  
• CETME Sporter Model S Manual (40 pgs, 3.78 MB)
  

UNITED KINGDOM

Lee-Enfield Rifle Manual (14 pgs, 370 KB) for No.1 MK III, No.3 MK I, No.4 MK I & No.5 MK I 

UNITED STATES

• Armalite AR-10B & M15 series Operator's Manual (24 pgs, 540 KB)
• Armalite AR-18 (AR-180) Operation & Maintenance Manual (32 pgs, 2.2 MB)
• Armalite AR-180 Factory Operation & Maintenance Manual (25 pgs, 3.3 MB)
• Barrett M107 Operator's Manual - US Army document TM 9-1005-239-10, Department of the Army, Washington DC, May 2004, approved for public release. (252 pgs, 6.7 MB)
• Barrett M107 Unit and Direct Support Maintenance Manual - document TM 9-1005-239-23P (Army) TO 11W2-5-7-2 (Air Force) TM 11110A-OI (USMC), Departments of the Army, Air Force and Marine Corps, Washington DC, February 2006. (312 pgs 5.4 MB)
• M14 AND M14A1 RIFLES AND RIFLE MARKSMANSHIP - document FM 23-8, Headquarters, Department of the Army, Washington DC, 16 March 1987.  Approved for public release. (253 pgs, 26 MB)
• M16A1 Rifle Operator's Manual - document TM 9-1005-249-10, Department of the Army, Washington, DC, 20 March 1979
• M16A2, M4, M4A1 Operator' Manual - US Army document TM 9-1005-319-10, Headquarters, Department of the Army, Washington, DC, August 1986 (176 pgs, 3MB)
• M16A2, M4, M4A1 Unit and Direct Support Maintenance Manual - document TM 9-1005-319-23 (US Army), TO 11 W35-5-42 (USAF); Departments of the Army and Air Force, Washington, DC; 9 April 1997.  Approved for public release.  (325 pgs, 2.51MB)
• Springfield M1A (civilian M14 variant) Owner's Manual (40 pgs, 957 KB)
• Springfield M1 Garand User's Manual (21 pgs, 1 MB)
• Springfield M1903 Operator's Manual - document TM 9-1270, US Army, 19 May 1942 (56 pgs, 8.4 MB) for M1903, M1903A1, M1903A3 & M1903A4
• US M1 Carbine Manual (97 pgs, 15 MB)
• US M1A, M14 Rifle Accurization Guide, US Army Marksmanship Unit (18 pgs, 744 KB)