View Full Version : AR buffer spring dilemma - carbine

04-24-2010, 11:15 PM
I have a dilemma regarding my 2 carbine buffer springs. I purchased the first one (top) from PK Firearms. It was included in the mil-spec kit they're selling. It also came with a heavy carbine buffer. I then purchased a 2nd one (bottom) from a vendor at the local gun show in LA. It was also bought as a kit and it came with a regular carbine buffer.

When I compared both springs, I noticed that one is longer than the other! The top one is older too, it has been used with more than 500 rounds. The bottom one is newer, it has been used with only 80 rounds! Both had no feeding problems with my 16" RRA upper with a carbine length gas tube.

My dilemma is I don't know which one to use. I know both had no problems while installed but which one will perform better? Why are they different lengths if both says carbine buffer spring? Are the spring lengths not the same with different companies? Any help is appreciated.

Picture of both springs

04-25-2010, 12:47 AM
sounds to me that if both function correctly, you don't have a problem. as long as your gun is cycling right, then don't worry about it.

04-25-2010, 2:24 AM
the top one looks like a wolf extra power spring. I have both springs that you do a regular standard spring and the wolf. The wolf is supposed to reduce recoil and eliminate the twang.
currently in my Ar im running the wolf extra power spring with a spikes h2 tungsten buffer.

the top spring can be found here http://www.midwayusa.com/viewproduct/?productnumber=152626

04-25-2010, 3:00 AM
Rifle springs are 1" longer than carbine ones.

They both should work fine however. If you don't have any problems, leave it be.

04-25-2010, 8:52 AM
Mil-spec states a carbine buffer spring is 10.5 to 11 inches long IIRC.