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Lewis Machine & Tool Company

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Lewis Machine & Tool Company
Company typePrivate
IndustryArms
Founded1980
HeadquartersEldridge, Iowa, U.S.
ProductsFirearms
Websitelmtdefense.com Edit this at Wikidata

Lewis Machine & Tool Company (LMT) is an American armaments company founded by Karl Lewis, in 1980. It manufactures weapon systems, including a variant of the M4 carbine and the M203 grenade launcher.[1] Its products are used by the military forces of the United Kingdom, New Zealand, Estonia and the United States. It formerly produced forged FN FAL receivers for Illinois-based DS Arms.

Products

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Bolt and bolt carrier groups

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A patented AR-15-pattern is produced with a bolt design featuring a redesigned extractor intended to improve the extraction of cartridges under adverse conditions. The company also produces a redesigned bolt carrier intended to improve the reliable performance of the rifle's “internal piston” system by obtaining a similar timing sequence with 14.5-inch carbine-length barrels compared to 20-inch rifle-length barrels for AR-15-pattern arms.[2]

LM308MWS and CQB MRP Defender

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The Monolithic Rail Platform (MRP)[3] was created by the company, a one-piece, Picatinny-topped AR-15-pattern upper receiver made from a forged aluminum block.[4] The MRP upper receiver has a quick-change barrel system.[5] Its top rail position matches M4 and E3-type weapons for optical and sight compatibility.[6]

In late 2009, LMT introduced the .308 Modular Weapon System LM308MWS, which uses the 7.62×51mm NATO round.[7]

In February 2012, the British Transport Police began to use AR-pattern short-barreled rifles produced by LMT.[8][9][10]

L129A1

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Main article: L129A1

Modular Ambidextrous Rifle System

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Modular Ambidextrous Rifle System
Estonian R20 Rahe 5.56×45mm NATO 368 mm barrelled variant
TypeAssault rifle
Battle rifle
Place of originUnited States
Service history
In service2015 – present
Used by
Production history
ManufacturerLewis Machine & Tool
Specifications
Mass3.3kg (empty)
Length
  • 914 mm (36.0 in)
("Maximum")
Cartridge5.56×45mm NATO
7.62×51mm NATO
6.5 mm Creedmoor
ActionGas-operated, rotating bolt (internal piston, not direct impingement)
or Short-stroke piston
Feed system5.56×45mm NATO: 30-round detachable box magazine
7.62×51mm NATO 20-round detachable box magazine

The Modular Weapons System (MWS) was developed into the Modular Ambidextrous Rifle System (MARS), available in light and heavy variants. The light assault rifle variants are chambered for the 5.56×45mm NATO intermediate cartridge and the heavy battle rifle/designated marksman rifle variants for the 7.62×51mm NATO, 6.5 mm Creedmoor or similar fully powered cartridges. MARS weapons feature lower receivers updated to fully ambidextrous mirrored controls and can be set up to use gas-operated, rotating bolt (internal piston, not direct impingement) or short-stroke piston operating systems a with the help of basic tools. The MARS receiver can host and switch between barrels of varying length, and diameter. material, and caliber. Two locking bolts accessible from the right side of the receiver with a basic tool lock a barrel extension and make the barrel unit user removable with a return to zero of the same barrel. MARS series weapons were sold to several military users.

New Zealand

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On 12 August 2015, the New Zealand Ministry of Defence announced that it would be replacing the current Steyr AUG rifle for the three branches of the New Zealand Defence Force with a rifle from LMT, one of eight companies that had submitted rifles for trials between March and June 2015.[11] Like the Steyr AUG, the submitted LMT design was also chambered in 5.56×45mm NATO. A contract of NZD 59 million was awarded to LMT for 9,040 rifles, designated the MARS-L (Modular Ambidextrous Rifle System-Light).[12][13]

The gas-operated, rotating bolt (internal piston) rifles were delivered in May 2017, and soldiers began training with them at Waiouru Military Camp on 15 June 2017.[14]

In September 2018, it was reported that some of the rifles had experienced breakages, including 130 with cracks around the bolt, and that all 9,040 rifles had had their firing pins replaced under warranty.[15] LMT later claimed that the number of worn or broken firing pins was much smaller, in the range of "less than one-tenth of one percent".[16] The issue reportedly stemmed from improper tempering. While replacing the firing pins, a similar quantity of selector switches and bolt carriers had also been found to display premature wear and were replaced.[16]

Civilian variant

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For civilian customers, LMT offers a semi-automatic only New Zealand Reference Rifle in its model range.[17]

Estonia

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Estonian R-20 L 7.62×51mm NATO designated marksman rifle

In May 2019, the Estonian Defence Forces selected the MARS-L after two years of testing to replace their IMI Galil and Automatkarbin 4 rifles. The Estonian Defence League Started using the R-20 in early 2023.[18] 19,000 short-stroke piston MARS-L rifles were ordered under the designation R-20 Rahe ("Hail" in Estonian).[19] The upper receiver has a Picatinny rail on the top and M-LOK compatible attachment points on its sides and uses a short-stroke gas piston system. The standard barrel length of the R-20 is 14.3 in (363 mm), but a 12 in (305 mm) variant designated the R-20 S is also produced.[20][21] A modified trigger design allows the trigger safety to be engaged without the hammer being cocked, which is not possible on a standard AR-15 pattern rifle.[22] The rifles were ordered with a Shot Counter Grip Module housed within the pistol grip to track parts wear and ammunition consumption with objective digital data. The accompanying reader unit can provide armorers with diagnostic maintenance warnings.[23]

In June 2020, the first batch of 1,500 R-20 Rahe rifles was delivered.[24] The R-20 is planned to fully replace the Galil and Ak 4 by 2022.[25]

Estonia also selected the MARS-H with a 16 in (406 mm) barrel as their designated marksman rifle chambered in 7.62×51mm NATO. The official Estonian designation for the MARS-H marksman rifle is the R-20 L.[26]

Civilian variant

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For civilian customers LMT offers the a semi-automatic only Estonia R20 RAHE Reference Rifle in its model range.[27]

Switzerland

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A 7.62mm Zf Stgw 20 designated MARS-H based designated marksman rifle chambered in 7.62×51mm NATO was introduced in 2023 by the Swiss Army Reconnaissance Detachment 10 and MP Spez Det.[28] These Swiss (professional) special forces units selected the Schmidt & Bender 3-20×50 PM II Ultra Short telescopic sight with the TREMOR3 reticle that enables quick targeting up to 800 m (875 yd) as their standard aiming optic.[29][30]

United Kingdom

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Within the Royal Marines at least, a MARS-H based L129A2 designated marksman rifle chambered in 6.5 mm Creedmoor with an 18 in (457 mm) barrel, a fully adjustable DMR stock and lengthened hand guard, a Leupold Mark 5HD 3.6-18×44 M5C3 Desert IR telescopic sight with TREMOR3 reticle, a HuxWrx suppressor, an Envision Technology ballistic calculator, and a Pixels-on-Target thermal sight was adopted in 2023.[31] The change from 7.62×51mm NATO ammunition to 6.5 Creedmoor was due to the 6.5 Creedmoor's better ability to successfully engage targets at distances around and over 800 m (875 yd).[32][33] The main disadvantages of this change are introducing a new chambering in the logistics chain, and due to a higher Oratio is shortened barrel life.[34] The upper receiver still uses a gas-operated, rotating bolt (internal piston) system like the L129A1, but the handguard attachment points on its sides were changed to be M-LOK compatible.[35][36] [check quotation syntax]

Other contractors

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Lebanon

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An undisclosed amount of Short Barreled Rifles (SBR) chambered for the 5.56×45mm NATO intermediate cartridge with an 10.5 in (267 mm) barrel have been ordered by Lebanon. The existence of a Lebanese contract became apparent as a production overrun of these weapons was offered on the internet in late 2023.[37]

References

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  1. ^ The National-Military Muscle on Display
  2. ^ United States Patent US20140075807A1 'Firearm bolt'
  3. ^ "Lewis Machine & Tool Monolithic Rail Platform". Retrieved 25 December 2014.
  4. ^ Grassi, Rich (9 May 2009). "LMT CQB MRP Defender 5.56mm". Tactical Life. Retrieved 31 May 2017.
  5. ^ "LMT's MRP 6.8 Battle Rifle". Tactical Life Gun Magazine: Gun News and Gun Reviews. 18 January 2009. Retrieved 9 April 2022.
  6. ^ US8234808B2, Lewis, Karl R.; Bargren, James Arend Seabold & Schafer, Jacob A. et al., "Monolithic rail platform and bolt assemblies for a firearm", issued 2012-08-07 
  7. ^ "Multi-Mission LMT .308 MWS". Tactical Life. 3 November 2009. Retrieved 25 December 2014.
  8. ^ "CQB 10.5 SBR". Lewis Machine & Tool Company. Retrieved 31 May 2017.
  9. ^ "Firearms used by British Transport Police - Freedom of Information Request 794-14" (PDF). British Transport Police. Archived from the original (PDF) on 27 July 2020. Retrieved 31 May 2017.
  10. ^ Austin, Jon (17 October 2015). "Guns on the Underground: Armed police to routinely patrol Tube amid threat from ISIS". Express. Home of the Daily and Sunday Express. Retrieved 31 May 2017.
  11. ^ "Individual Weapon Replacement". defence.govt.nz. 12 August 2015. Archived from the original on 18 August 2015.
  12. ^ New Zealand Army Selects LMT To Replace Steyr AUG - Thefirearmblog.com, 18 August 2015
  13. ^ Confirmed, LMT to supply NZDF with CQB16 - Thefirearmblog.com, 28 August 2015
  14. ^ New $59 million weapons package begins Defence Force rollout -Stuff.co.nz, 16 June 2017
  15. ^ David.Fisher@Nzherald.Co.Nz, David Fisher Senior Writer (19 September 2018). "NZDF's new rifles - all 9040 of them - get firing pin replacements after breakages". NZ Herald.
  16. ^ a b "LMT Warranties Components with New Zealand Defense Forces MARS-L". The Firearm Blog. 25 September 2018.
  17. ^ LMT New Zealand Reference Rifle
  18. ^ ERR (12 September 2022). "Enamik kaitseliitlasi saab aasta lõpuks Rahed kätte". ERR (in Estonian). Retrieved 27 January 2024.
  19. ^ Turovski, Markus (12 September 2022). "Most Defense League members to get Rahe assault rifles by year's end". news.err.ee. ERR.
  20. ^ "LMT Defense Announces Award with Estonian Defence Forces -". 17 May 2019.
  21. ^ New Estonian LMT R20 RAHE Assault Rifle, 21 May 2021
  22. ^ "[TFB GUNFEST] New LMT Rifles, Uppers, and Triggers for 2021 -". 31 January 2021.
  23. ^ "LMT's Shot Counter Grip Module For Military And LE". 18 January 2021.
  24. ^ Wright, Helen (22 July 2020). "Gallery: Defense Forces introduced new R-20 Rahe automatic firearms". news.err.ee. ERR.
  25. ^ Kallaste, Kristjan (18 December 2020). "Defense Forces' new Rahe automatic rifle to make debut in Mali". news.err.ee. ERR.
  26. ^ "7,62 MM TÄPSUSPÜSS R-20 L". mil.ee (in Estonian). Retrieved 13 March 2023.
  27. ^ LMT R20 RAHE Reference Rifle
  28. ^ Military police special detachment (MP spec det)
  29. ^ Präzisionsgewehr LMT Defense 7.62mm Zf Stgw 20 Reference Rifle mit Schmidt & Bender 3-20×50 PM II
  30. ^ Technical Data SheetTremor ™3 Reticle (schmidtundbender.de)
  31. ^ "Britain's Commandos to get new assault rifles". Royal Navy. 7 September 2023. Retrieved 7 September 2023.
  32. ^ USSOCOM Adopts 6.5 Creedmoor. soldiersystems.net, 23 March 2018
  33. ^ Weapons: The Hits Just Keep On Coming. strategypage.com, 7 January 2019
  34. ^ Baby Barrel Creedmoor – Study of a Short(er) 6.5 Creedmoor Riflee, Sean Murphy, 4 December 2019
  35. ^ U.K. Royal Marines adopt a 6.5CM LMT as the L129A2, ft. HUXWRX and Leupold. The Firearm Blog. 21 September 2023.
  36. ^ " Reaches Further Downrange: The L129A2 gets adopted Small Arms Defense Journal. 3 October 2023.
  37. ^ 10.5" LMT SBR Lebanon Contract Overrun
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