Believe me, I've tried, haha. I wish ego bolts fit, but sadly, they do not. The distance from the pin to the air transfer hole is the right length, but the diameter is too big, and the bolts are too long.
But, I had a halfblocked cocker (done by curt) and a half block auto cocker bolt was the same dimension as a bushmaster bolt. I'm not sure if that applies to every cocker bolt, but I would definitely try that route, Maybe pick up a cheap cocker bolt, and try it out (I'm 90% sure they are fully compatible).