Selected Handgun Detail

American Derringer
Model LM4 Semmerling
American Derringer Pistol LM4 Semmerling .45 Auto Variant-2
Scale To:
Gun Dimensions Width:1-in
Length:5.2-in Height:3.7-in
Barrel:2-in Weight:24-oz
Variant 2 of 2
Gun Rankings
  • Power Factor (230 grain bullet)147890
  • Recoil Factor (230 grain bullet)6.98 ft-lb
  • Total Capacity5 rounds
  • ConcealabilityGood
  • Defense Factor71%
Gun Specifications
Produced:1998 -
Caliber:.45 Auto
Trigger:double-action (DA/SA)
Safety:no manual safety
Frame:chrome finish steel
Sights:blade front, notched rear
Notes:manually operated repeater
American Derringer Corporation
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Gun Value
MSRP:$4,450.00Used Est:$3,700.00
Last Update:9/27/2023
About the Gun

This gun has been produced by various companies throughout the years. The LM4 is American Derringer's offering of the Semmerling design. While it may look like a semi-automatic pistol, it is not. The slide must be manually racked between double-action trigger pulls.

Cartridge Specifications
Cartridge: .45 Automatic
Alias: .45 Automatic Colt Pistol (ACP)
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Ballistics for This Gun
Selected Bullet Mass:230 grains
MV:643 ft/sec ME:211 ft-lbs
About the Cartridge

This cartridge was developed by John Browning and was adopted by the United States Ordnance Department along with the Colt-Browning automatic pistol in 1911. It has also been made the official military handgun chambering by several other governments, notably Argentina, Mexico and Norway. The 45 Automatic is the most powerful military handgun cartridge in use today. This is a heavy and powerful sub-sonic round. Although its muzzle energy can exceed 400 ft-lbs, its velocity and bullet weight creates a steep trajectory curve that limits its effective range to self-defense distances.

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