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Posted: 8/18/2009 6:31:47 PM EDT
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I just got one of these for my RR M16 with the auto trip.
i installed it with the auto trip and the anti bounce thing that goes behind the bolt. There are a bunch of other springs, and a ball bearing. What is that other stuff for and how do you install it? |
| The ball bearing and short spring go in a channel on the right side of the bolt. They interact with a detent in the bolt carrier rail to eliminate bolt bounce in full-auto. More info here: http://www.ar15.com/forums/topic.html?b=2&f=282&t=164173 |
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My Spikes experience:
After a couple of hundred rounds, the bolt kept getting "stuck" about 1/8" from going into complete battery. I'm using a full length Lakeside Machine recoil spring, reduced power hammer spring, heavy ball detent spring and the AB weight. The culprit (in my case) was a very heavy sear spring (actually a reduced length AK 47 disconnector spring) in a DIAS. The heavy spring would cause the sear leg to catch the kit's full auto trip plate and keep the bolt from traveling completely forward. I replaced the sear spring with a bolt stop lever plunger spring from an AR15 (1/2 the power of the AK47 disco spring). Items of notable interest: 1. Using high velocity ammo and a reduced power hammer spring allow the bolt to travel far enough back to reset the hammer. 2. Using the LM full length (extra power) recoil spring and a "light weight" sear spring allow the bolt to travel fully back into battery. _____________________________________________________________________________________________________________ It will now shoot any ammo in FA and have not had one malfunction in the last 300 rounds since I replaced the heavy sear spring. 
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Quoted:
Tell me if you get yours to run in FA, mine wont with any of the bulk pack Ive tried. I get the light primer strike on the second round no matter which spring combo. My 16" upper runs great doing mag dumps on full-auto using CCI Minimags. If you shoot a short burst, the bolt does not seem to go/stay in battery, so the next trigger pull won't work. I am told that having the ball/spring detent installed properly should remedy this to a large extent, but have not yet had a chance to test it out. |
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