You will need to select the correct model based on the type of buffer tube you have. If you have a Mil-Spec carbine length buffer tube you will need the Mil-Spec model of the BlackHawk Knoxx Axiom A-Frame Carbine Stocks. If you have a commercial carbine length buffer tube you will need the commercial model. Please email us at techsales@opticsplanet.com for more information.
I was told by tech support guys, whom they have let go as of last week, that some batches were sent out with wrong pins. I have 3 out of 4 that will not stop on any of the 6 index holes.
I just received 2 of mine back, after supposedly going in to be fixed, and they don't work on any of my 10 available buffer tube from 3 different manufacturers. This is beyond f'ing irritating. Good news is that Blackhawk has killed off that portion of the company. These stocks are discontinued, but that doesn't help me a lot.
this answer is incorrect. the .ilspec stock does not fit the mil spec buffer tube. the manufacturer is completely wrong