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Old June 16, 2009, 04:28 PM   #1
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Join Date: February 15, 2009
Location: oak lawn, illinois
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colt h bar upper reciever seating problems

i have an OLD colt Hbar upper. i cannot for the life of me find a lower that will seat properly for it. the front pins are off by several milimeters.

anyone have any ideas?
i know i can always just get another upper.. which is exactly what i did, i just would like to salvage said upper. we have had it for almost 20 years and the closest issue i can find is that it was made for 5.56 and a .223 lower is smaller?
anyone have any other thoughts?

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Old June 16, 2009, 04:44 PM   #2
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There are offset adaptor pins available for these that should let you use your upper and lower together: you need to measure the hole diameters in each, and use one of the following adaptor pins from Brownells:

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