1986s4: As the last couple of guys have alluded to, if you are building from scratch, it isn't a bad idea to go with the A5 extension tube tube and buffer. In essence it is a rifle buffer system on a carbine.
It uses an intermediate receiver extension/buffer tube which is longer than a carbine tube and slightly shorter than a rifle tube. The spring is a rifle length spring and the buffer is specially made to fit the system, in essence it is a short rifle buffer. Most folks say the a5 system smooths out recoil impulse, removing whatever snap there is to the recoil of the carbine. Because of the slightly larger buffer length, the buffers can be made heavier than carbine buffers. That, compared with the addition length of the rifle spring, can be a big deal when shooting suppressed, or, if you simply have an over-gassed rifle.
There have been several information threads on here, just search 'A5.'
You can get the kit from Vltor, the originator, but they are almost always out of stock. The BCM kit is less expensive, and generally in stock:
https://www.bravocompanyusa.com/BCM-...ediate-shk.htm $99.50
The BCM kit comes with the A5H0 buffer, which weights 3.8 oz. Which is the equivalent of a carbine system H buffer (the H buffers are often also called H1 buffers). It is a good starting point for most projects.
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
Bookmarks