Great for emergency spares. Only available for 5.56.
There is not much to say about this tiny spring other than it looks to be the same size as the one I took out. I will say that the folks at POF are good people. Took care of a small issue I had when I lost a screw for the POF ambi selector that I bought from another source. I received the screw that they sent me for free along with this spring and a detent pin. Ordered this stuff on the 23rd and got it the 27th and the shipping was reasonable! +1 for POF! Thanks y’all!