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Old 10-21-2018, 07:55 PM
MajorD MajorD is offline
 
Join Date: Oct 2009
Location: Arizona
Posts: 496
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It was only Colt that did it and only for a limited time of production. No other maker during 1911A1 production did this. On the other makers ( most notably Remington Rand- the largest producer of 1911A1’s) it can be determined by variations in how the slides were marked
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