In 2000, H&R 1871 was purchased by Marlin Firearms. The assets of Marlin, including H&R 1871 and its subsidiary, New England Firearms (NEF), were bought by Remington in 2007. H&R's corporate office is now located with Remington and Marlin in Madison, North Carolina, while the production facilities are at the former Remington plant in Ilion, New. AMT (Arcadia Machine & Tool) was a firearms manufacturing company founded in the late 1970s by Harry W. Sanford, the former president of AutoMag. AMT produced a new generation of pistols based on John M. Browning’s design of the 1911 pistol. These pistols were branded “AutoMag”, and were the first model 1911 clones made of stainless steel. Weight: 1.12 lbs (0.51 kg) Caliber:.380 ACP,.22lr,.45ACP,.40S&W, 9mm,.357SIG,.400COR-BON Barrel: 2 inch (5 cm) Action: Double Action Only Range: 75 ft (22.9 m).
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AMT
Locations: Formerly ARCADIA MACHINE AND TOOL
Irwindale, California
See—GALENA INDUSTRIES INC. & AUTO-MAG
Irwindale, California
See—GALENA INDUSTRIES INC. & AUTO-MAG
AMT is one of several companies that succeeded Auto Mag Corp. Original manufacturer of Auto Mag pistols operated from approximately 1984 to 1998. Prices in this section are for these earlier AMT-built guns only. In 1998, Galena Ind., of Sturgis, South Dakota, purchased the rights to produce most of the AMT-developed firearms and manufactured several models from 1999 to 2001. In 2005, the rights to several AMT models were acquired by Crusader Gun Co. of Houston, parent company of High Standard Mfg. Co. Also see listing for Auto Mag.
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The 'M' prefix only means it was one of the early models before some changes were made. 'C' series were second and after some final changes were made in order to perfect the design. And I believe the 'H' designation means it's made by Hi Standard. XP001 is correct in everything he said. I will add that the early model Hold Open assy's were flawed in that the little ball bearing which is peened in place would jump up under fire and hold the slide open intermittently and also could come out of it's pocket. Not all did this. We saw a lot of these come back for replacement of the new design which was incorporated into the later model 'C' & 'H' series. These Hold Opens replace the peened in ball bearing with a pin, does not jump up under fire and is held in place with a roll pin. With all this said, Hi Standard seems to have omitted the port system and it is reported that the new design works well without it and with most ammo. The original guns were engineered around the Winchester Super X ammo and the guns would not function with Federal or CCI. Federal clogged up the ports while CCI were too quick burning and in most cases blew off the case heads. Your gun may or may not have come with a disclaimer that states to use the Winchester ammo only. We stared throwing them in after they came in for repair. Hope this helps.