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A zinc-Parkerized civilian .45 ACP Springfield Armory, Inc. M1911-A1 pistol. Parkerizing is a method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of a chemical phosphate conversion coating. It was usually applied to firearms.
The Model 3000 was available in 12 and 20 gauge, chambering 2 + 3 ⁄ 4 or 3 in (7.0 or 7.6 cm) shotshells. [1] A "slug gun" variant chambered for 2 + 3 ⁄ 4-inch shells with a magazine extension and a shorter barrel was offered in 12 gauge only, with optional open sights.
A chrome-lined bore offers a more durable, more corrosion resistant, and easier-to-clean barrel for the end user to maintain and is rarely found on precision bolt-action sniper rifles. The barrels of the "First Generation" rifles were said to be made from the hammer-forged blanks used for M240 General Purpose Machine Gun production at the FN ...
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The PGU-12/B, issued only by the U.S. Air Force, had a greatly increased maximum allowable pressure rating of 20,000 psi (138 MPa), which was sufficient to propel the 130 grain (8.4g) FMJ bullet at 1,125 ft/s (343 m/s) from a 6-inch (150 mm) test barrel, and 950–1,000 ft/s (290–300 m/s) from a 4-inch (100 mm) revolver barrel.
However, while the GP WASR-10 was made with new parts, all parts on the GP WASR-10/63 (other than the barrel) came from a former Romanian military rifle. The original year of manufacture can be seen engraved on the left side of the trunion (the trunion is visible where it protrudes through the receiver on the left side, near the front), along ...
The above proof round pressure requirements for the 9 mm and 12.7 mm rounds established by the British Ministry of Defence are higher than the current (2008) C.I.P. proof round pressure requirement legislation for the civilian equivalent 9 mm Parabellum (C.I.P. P max rating 235 MPA / (34,083 psi) and .50 Browning (C.I.P. P max rating 370 MPA ...
Weighing 22 ounces and available with a blued finish and black hard rubber grips in .22 Long Rifle, .22 WRF, .32 Long (and Short) Colt, and .32 Colt New Police (.32 S&W Long) chamberings, the First issue of this model featured an adjustable open iron sighted 6 inch barrel and was marketed from 1910 to 1925, with checked Walnut grips replacing ...