On March 4, 1963, the Department of Defense's Advanced Research Projects Agency made the first purchase of the Stoner 63, ordering 25 units in various configurations. In August and September 1963, the Stoner 63 was sent to the Marines Corps Landing Force Development Center at Quantico for evaluation, where it made a positive impression with its light weight and high ammunition capacity; the Marines favored the rifle and light machine gun configurations. Trials were performed by the Army Material Command (responsible for logistical support for the Marine Corps) at their own test facilities.
Many bugs affected the outcome of the Army trials of the gun: the ammunition requirements proposed were unrealistic and the weapon was expected to perform with an extremely wide range of port pressures, leaving very little power reserve with some ammunition types. For instance, the tracer ammunition used in the Stoner 63 was of such low pressure that it even failed to function reliably in the M16.
These factors severely affected the weapon's reliability. After several months of testing, the Stoner 63 system was ultimately deemed to be unacceptable for service use. The Army submitted recommendations for improvements to the design—these included a stainless steel gas cylinder, a two-position fire selector with separate safety, ejection port dust covers and modifications to the belt feed mechanism. The upgrades resulted in the improved Stoner 63A, which began production in 1966. Only about 2,000 examples of the initial version were manufactured before the transition to the model 63A.
Other articles related to "trials, trial":
... Two seaplanes were carried during trials in 1913 ... The results of these trials were used to help design Ark Royal, completed as a seaplane carrier using an existing hull after her purchase in May 1914 ... After the seaplane trials ended in December 1913, Hermes reverted to a cruiser and was recommissioned, only to be taken out of service at the end of the year and ...
... Clinical trials are at the heart of current evidence based medical care ... and methodologies of online clinical trials and list examples ...
... Two trials were held, the first on November 7, 1922, and the second in the winter of 1923 ... indicted for the massacre, and both trials ended in acquittals for all the defendants ...
... Halls featured in a pre-season match for Blackpool, with whom he was on trial ... Sheffield Wednesday website that Halls had joined the club on trial ...
... Phase I clinical trials have been completed and phase II clinical trials are currently underway in South Africa ... As of late 2010, those trials, while promising, were not expected to be finished until late 2015, with efficacy trials running in parallel from 2009 to 2019 ...
Famous quotes containing the word trials:
“Why, since man and woman were created for each other, had He made their desires so dissimilar? Why should one class of women be able to dwell in luxurious seclusion from the trials of life, while another class performed their loathsome tasks? Surely His wisdom had not decreed that one set of women should live in degradation and in the end should perish that others might live in security, preserve their frappeed chastity, and in the end be saved.”
—Madeleine [Blair], U.S. prostitute and madam. Madeleine, ch. 10 (1919)
“On the whole, yes, I would rather be the Chief Justice of the United States, and a quieter life than that which becomes at the White House is more in keeping with the temperament, but when taken into consideration that I go into history as President, and my children and my childrens children are the better placed on account of that fact, I am inclined to think that to be President well compensates one for all the trials and criticisms he has to bear and undergo.”
—William Howard Taft (18571930)
“... all the cares and anxieties, the trials and disappointments of my whole life, are light, when balanced with my sufferings in childhood and youth from the theological dogmas which I sincerely believed, and the gloom connected with everything associated with the name of religion, the church, the parsonage, the graveyard, and the solemn, tolling bell.”
—Elizabeth Cady Stanton (18151902)