If you are anything like me you want to know why things work the way they do, and today I’m going over buffer weights and why they’re important.
Now I know what your thinking “switchpod I have an ar-15 and it runs perfect already”. If it is then that’s awesome, but let’s say you have a short barrel ar-15 and once you have experienced a stuck case and you can see that the rim of the case is torn off!!!
Now your rifle is down. You might blame the extractor, but it clearly worked because it took some of the brass/ steel rim with it. Here’s the deal the shorter barrel has a much faster impulse than a rifle length barrel. So let’s look st the buffer!
Here is a stock carbine buffer and it has 3 steel weights in it. The assembly weighs 3.0oz
So let’s take a look inside it.
Here you can see the buffer body, 3 steel weights, 3 rubber pucks, roll pin, and buffer bushing.
Now we are going to trade in some of our steel for tungsten! Tungsten is 130% denser than steel and 70% denser than lead!
So here is what the line up looks like now.
Add your weights, pucks and bushing. Reinstall your roll pin!
Now re weigh the buffer.
Now we have an H buffer.
Remember to always test your new buffer with your rifle to ensure function.
If this is you rifle for defense try it on The coldest day with you lowest power ammo to confirm function. You will notice your chamber pressures will decrease in colder temperatures in most cases.
Now you might be asking why do this with a normal ar-15? Well let’s say you have a piston ar15. You might notice a funny ware pattern on the upper receiver!
This little mark is from your cam pin
digging into the receiver due to faster operation you see with piston ar-15 rifles.
If you run a binary fire trigger a heavier buffer will help control carrier bounce and will result on less stoppages, this includes full auto as well.
If you run Supressors a heavy buffer can help with the over gassing. You can also with a heavy buffer get rid of that ridicules brake
and maybe make friends at the range again! On slow motion video you will see that the recoil comes mostly from the carrier bottoming out and less from firing the rifle.
Buffer weights as follows.
Carbine buffer= 3 steel= 3.0oz
H buffer= 2steel, 1tung= 3.8oz
H2 buffer= 1steel, 2tung= 4.7oz
H3 buffer= 3tung= 5.6oz
And for our a1/A2 stock the rifle buffer is
5 steel weights at 5.0oz!
On that note be safe and have fun!