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Hilt of the Pattern 1831 sabre. This sword has grip scales of mammoth ivory. Detail of frost-etched decoration of the blade, showing a crown over the 'VR' monogram of Queen Victoria. The 1831 pattern general officer's sabre was directly influenced by existing mameluke swords worn by officers of various cavalry regiments.
This ivory will be occasionally marked synthetic while "French Ivory" or "India Ivory" are common marks. It can be distinguished from natural ivory due to its lighter weight and more even coloring. [5] Cellulose nitrate can be identified with a chemical spot test using diphenylamine. This ivory can degrade and produce acidic and oxidizing nitrogen.
The P7M13 was terminated for failing reliability and corrosion resistance requirements and the 459M for failing service life and firing pin energy requirements. [ 19 ] In both trials where the Beretta 92SB-F and SIG Sauer P226 competed the SIG was either equal or superior to the Beretta in most tests. [ 20 ]
By January 2004, all 1911-style products were manufactured in the Olympic Arms facility in Olympia. [2] In 2002, Olympic Arms revived the 1955 Whitney Wolverine pistol for the .22 Long Rifle cartridge, with a black polymer frame instead of the original Whitney's blue-finished aluminum alloy frame. [3] [4] [5]
RIA (Rock Island Armory) 1911s are derivatives of the US Military G.I. M1911-A1, the standard issue US Service pistol from 1911 to 1985. [3] Most RIA models are targeted at the low-end price point of the 1911 pistol market and are basic entry-level MIL-SPEC versions of the 1911. [4] However, some models offer additional higher-end features.
Schreger lines in a mammoth ivory. Schreger lines are visual artifacts that are evident in the cross-sections of ivory. [1] They are commonly referred to as cross-hatchings, engine turnings, or stacked chevrons. Schreger lines can be divided into two categories. The easily seen lines which are closest to the cementum are the outer Schreger lines.
Kimber has also produced several higher-end full-sized model 1911 pistols that are closely based on the Custom, but are not considered part of the Custom line due to their additional features and higher price. These include the following: Eclipse Custom II, with bi-tone stainless and black finish and night sights.
The Colt Officer's Model or Colt Officer's ACP is a single-action, semi-automatic, magazine-fed, and recoil-operated handgun based on the John M. Browning designed M1911.It was introduced in 1985 as a response from Colt to numerous aftermarket companies making smaller versions of the M1911 pistol.
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