Originally Posted by
cgbills
It has been a while since I have done a 20in upper. I got a good deal on a barrel, so I decided to build a clone-esq M16A4 from my infantry days. Because of this I am going to run a rifle buffer system/stock. Also I currently have a FSB on the upper. My question comes though about changing out some SS weights in the buffer for some tungsten I currently have.
An A5H4 buffer weighs 6.3oz and has 4 tungsten weights. (I've also heard 7.16 oz)
A rifle buffer weighs 5.0 oz. If you replace the aluminum spacer tube with two steel weights and washers, for a total of 7 steel weights instead of 5, it should be around 6.15oz, another poster here called it an R7 buffer. I use that buffer with a Tubbs flat wire spring in my rifle and it is smooth. I've never shot it suppressed but I would think that would be a good starting place.
I tried working with different spacers in the rifle tube to us A5 buffers, and then carbine buffers with carbine springs. With those I kind of bounced around the recoil impulse I wanted so I finally just started using the rifle buffer and different weight combos, ended up that the R7 was what I like most.
If you have extra weights take them to the range along with an armorers block/hockey puck, an armorers hammer, a roll pin starter and a roll pin punch for the buffer's roll pin and spend the afternoon at the range building different buffers and noting the results. Take an extra roll pin, or two.
Patriotism means to stand by the country. It does not mean to stand by the President... - Theodore Roosevelt, Lincoln and Free Speech, Metropolitan Magazine, Volume 47, Number 6, May 1918.
Every Communist must grasp the truth. Political power grows out of the barrel of a gun. Our principle is that the Party commands the gun, and the gun must never be allowed to command the Party Mao Zedong, 6 November, 1938 - speech to the Communist Patry of China's sixth Central Committee
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