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Posted: 1/17/2006 7:57:02 PM EDT
i have a sub gun class coming up and our umps arent in yet if i take my 9mm colt upper and block and instal it on our dept colt full auto lowers circa 1973 will it function or is there a hammer issue thanks guys jim
Link Posted: 1/18/2006 2:19:10 AM EDT
It will work.

You should install a heavy 9mm buffer.

Possibly have the bolt ramped so you do not damage the lowers.
(KNS Pins also availible)
Link Posted: 1/18/2006 3:21:14 AM EDT
i odnt want to have anything permantly done to the weapon as its a temporary fix while im in the class if i stay with the standard buffer what will happen?? thanks jim
Link Posted: 1/18/2006 10:44:06 AM EDT

What kind of stock are you using, fixed or collapsing? If it's the fixed stock, you'll be fine with the original buffer. If it's a collapsing stock, the heavy 9mm buffer would be a good idea to make the gun more pleasant to shoot and reduce the abuse on the lower. It takes all of ten seconds to change over.
Link Posted: 1/19/2006 2:18:58 AM EDT
[Last Edit: 1/19/2006 2:19:51 AM EDT by MoNkEyTurbo]
Well, the heavy buffer takes more energy for the bolt to move the same distance, so you have less energy transfered to your hammer, hammer pin.. etc...

A buffer takes less than a minute to exchange, and you will not damage anything by doing it.
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