04-27-2017, 03:52 AM
There are varied opinions on the different buffers for the AR-15's. The buffer tube determines the buffer and spring. With a rifle length buffer tube use a rifle buffer with rifle spring. Many forum members like the JP Silent Captured Spring/Buffer. With Carbine buffer tube whether mil spec or commercial use a carbine spring and carbine buffer. Other buffers are popular but I've had no issue with the standard 3 ounce carbine buffer. H buffers and H2 buffers are popular with AR-15 carbines. Some barrels have large gas ports (like AR Stoner 18" 6.5 Grendel II) and a H2 buffer will help reduce the effects of being over gassed.
Some people will use heavier buffers and/or buffer springs when using suppressors to improve reliabilty. I personally think an adjustable gas block is a better way to adjust a rifle/carbine for use with a suppressor. For people who don't want to swap out the gas block different buffers and springs might be a solution. I have 2 16" 5.56/223 AR-15 and one 20" AR-15 and I never had a reason to change the buffers. One 16" 5.56/223 is carbine gas the other is a midlength and I don't ever remember having a malfunction with any of my three 5.56 AR-15's. I came from a LE background and I tend to keep my rifles clean and lubed.
Some people will use heavier buffers and/or buffer springs when using suppressors to improve reliabilty. I personally think an adjustable gas block is a better way to adjust a rifle/carbine for use with a suppressor. For people who don't want to swap out the gas block different buffers and springs might be a solution. I have 2 16" 5.56/223 AR-15 and one 20" AR-15 and I never had a reason to change the buffers. One 16" 5.56/223 is carbine gas the other is a midlength and I don't ever remember having a malfunction with any of my three 5.56 AR-15's. I came from a LE background and I tend to keep my rifles clean and lubed.