F41A 21/00
Barrels
Official title: Barrels; Gun tubes; Muzzle attachments; Barrel mounting means (F41A25/00 takes precedence; barrel attachments for firing grenades or riot-control ammunition from smallarms F41C27/06)
F41A21/00 (Barrels) appears on 2,618 US grants and 2,221 published applications in this corpus.
Search patents in F41A- Granted patents
- 2,618
- Published applications
- 2,221
- Assignees
- 860
- Inventors
- 2,915
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 17 | 0 |
| 1978 | 22 | 0 |
| 1979 | 13 | 0 |
| 1980 | 19 | 0 |
| 1981 | 11 | 0 |
| 1982 | 10 | 0 |
| 1983 | 18 | 0 |
| 1984 | 28 | 0 |
| 1985 | 18 | 0 |
| 1986 | 25 | 0 |
| 1987 | 37 | 0 |
| 1988 | 23 | 0 |
| 1989 | 19 | 0 |
| 1990 | 31 | 0 |
| 1991 | 16 | 0 |
| 1992 | 22 | 0 |
| 1993 | 13 | 0 |
| 1994 | 22 | 0 |
| 1995 | 32 | 0 |
| 1996 | 24 | 0 |
| 1997 | 30 | 0 |
| 1998 | 31 | 0 |
| 1999 | 19 | 0 |
| 2000 | 15 | 0 |
| 2001 | 37 | 11 |
| 2002 | 32 | 28 |
| 2003 | 42 | 33 |
| 2004 | 33 | 34 |
| 2005 | 18 | 43 |
| 2006 | 28 | 32 |
| 2007 | 22 | 31 |
| 2008 | 26 | 30 |
| 2009 | 22 | 28 |
| 2010 | 52 | 73 |
| 2011 | 63 | 73 |
| 2012 | 69 | 83 |
| 2013 | 72 | 53 |
| 2014 | 99 | 90 |
| 2015 | 103 | 110 |
| 2016 | 118 | 126 |
| 2017 | 108 | 134 |
| 2018 | 124 | 146 |
| 2019 | 167 | 150 |
| 2020 | 144 | 147 |
| 2021 | 124 | 161 |
| 2022 | 118 | 122 |
| 2023 | 115 | 132 |
| 2024 | 123 | 127 |
| 2025 | 129 | 116 |
| 2026 | 98 | 108 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F41A 21/32Muzzle attachments or glands889
- F41A 21/30Silencers673
- F41A 21/48Barrel mounting means593
- F41A 21/02Composite barrels, i.e. barrels having multiple layers192
- F41A 21/28Gas-expansion chambers176
- F41A 21/16Barrels or gun tubes characterised by the shape of the bore165
- F41A 21/12Cartridge chambers142
- F41A 21/06Plural barrels110
All 15 subgroupsShow fewer
- F41A 21/44Insulation jackets97
- F41A 21/10Insert barrels, i.e. barrels for firing reduced calibre ammunition and being mounted96
- F41A 21/26Barrels: specially adapted for recoil reinforcement84
- F41A 21/24Barrels or gun tubes with fins or ribs66
- F41A 21/20Barrels or gun tubes characterised by the material59
- F41A 21/22Barrels which have undergone surface treatment42
- F41A 21/46Barrels having means for separating sabots from projectiles23
Recent patents
- Suppressor cover for rifle6 Oct 2026US 12,753,985 B2
- Locating fastener for firearm optic6 Oct 2026US 12,753,994 B2Axts Inc
- Weapon usage monitoring system having real-time performance metrics feedback based on discharge event detection29 Sep 2026US 12,747,922 B2Armaments Research Company, Inc.
- Sectioned reducing barrel system and method of use29 Sep 2026US 12,747,924 B1
- Spade grip attachment assembly for a minigun29 Sep 2026US 12,747,925 B2CHD Holdings, LLC
- Sequester1 Oct 2026US 2026/0298572 A1
- Accessory attachment mount for a suppressor1 Oct 2026US 2026/0298573 A1Sig Sauer, Inc.
- Firearm accessory mounts1 Oct 2026US 2026/0298574 A1Shaw Armament Systems, LLC
- Firearm suppressors having a plurality of tubes having helical pathways for receiving gas therethrough24 Sep 2026US 2026/0287293 A1Centurion Arms, LLC
- A mechanism system for fully and semi-automatic rifles17 Sep 2026US 2026/0276333 A1Retay Silah Otomotiv Insaat Ve Gida Sanayi Ve Ticaret Limited Sirketi
Most cited
By later US patents
- Laser range finding apparatus199US 5,669,174 A1997
- Jacketed bullet198US 9,389,052 B2The United States of America as represented by the Secretary of the Army · 2016
- Modular laser apparatus185US 5,584,137 A1996
- Systems and devices for remotely operated unmanned aerial vehicle report-suppressing launcher with portable RF transparent launch tube184US 8,505,430 B2AeroVironment, Inc. · 2013
- Automatic rifle gas system170US 4,765,224 A1988