Quote:
Originally Posted by Iraqgunz
The Canadian military has been using such a configuration for several years now called the C7A2. Generally speaking, if you put an A2/A4 upper on an M4 lower it may not function correctly. It is my understanding that the Canadian military worked with Colt/Diemaco to get the correct buffer size to work and I believe that their buffer is a custom one.
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The dozen or two I have swapped out have run fine.
TR
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"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat." - President Theodore Roosevelt, 1910
De Oppresso Liber 01/20/2025
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