Superior Industries, based out of Glendora, California, has firing pins for the Great Western and Hawes firearms and other difficult-to-find pins for single actions that are not available through normal sources. See the discussion area for more info.
At least $300 to 400, depending on condition and caliber.
Possibly the Welrod pistol, or the DeLisle carbine, both invented in Great Britain. However, a .22 rifle firing .22 Colibri ammunition is so quiet that you can hear the click of the firing pin.
The now defunct Great Western Company
Varies, about $3-400. Earlier guns by this maker were of varied quality, and worth less.
A company by the name of Great Western Arms started producing replicas of the Colt Peacemaker in California in about 1954. They were in business for no less than 4 or 5 years.
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It depends entirely on your rank, but I'll assume that you're at least SS2. If your style is more based on rapid firing, then the USP is a great choice. If you are more into the high damage, low firing rate type weapons then the Anaconda Black is your best choice.
Great National Assembly was created in 1948.
Great National Assembly ended in 1989.
No published sn data. A list of dates and serial numbers that can be used as a general guide can be found at the link at the bottom of this page.
As of 2014 they go for 5-$600. Great pistol. Very natural fit to the hand, great sights.
Great Western Hospital was created in 2002.