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2/22/2005 12:36:38 AM EDT
Can someone explain to me how the OA-93 works? Or point me to a webpage with an exploded diagram (from CAD software, not aquabumping)?

Thanks.
2/22/2005 5:59:19 AM EDT
[#1]
Take a std. AR15 remove the buttstock and recoil system, now hood a screen door spring onto the bolt carrier and pull it forward.  It just has the recoil spring in the front of the bolt carrier pulling is closed rather than behind the bolt carrier pushing it closed.
2/22/2005 7:17:58 AM EDT
[#2]

Quoted:
Take a std. AR15 remove the buttstock and recoil system, now hood a screen door spring onto the bolt carrier and pull it forward.  It just has the recoil spring in the front of the bolt carrier pulling is closed rather than behind the bolt carrier pushing it closed.



Does this help mitigate recoil related muzzle rise with rapid fire?
2/22/2005 10:29:17 AM EDT
[#3]
The onlything it does is let you have an AR15 type weapon with no/or a folding buttstock.  How is spring in front vs spring in back going to effect recoil?
2/22/2005 11:00:04 AM EDT
[#4]

Quoted:
Can someone explain to me how the OA-93 works?
Thanks.



Magic....
2/22/2005 11:49:41 AM EDT
[#5]

Quoted:
The onlything it does is let you have an AR15 type weapon with no/or a folding buttstock.  How is spring in front vs spring in back going to effect recoil?



Perhaps because the force vectors act against the base of the spring in a standard buffer, which is directionally towards the butt of the rifle, while a front positioned spring that pulls rather than pushes would have the initial force vector from the kinetic energy of the propellant combustion oriented towards the rear of the rifle, as the bolt is driven to the rear initially, but then as the spring pulls rather than pushes the bolt back into battery, the second force vector component would be towards the muzzle, perhaps dampening the impact of the recoil? Just a guess. Seems like it should act differently though.
2/22/2005 2:19:16 PM EDT
[#6]

Quoted:
Take a std. AR15 remove the buttstock and recoil system, now hood a screen door spring onto the bolt carrier and pull it forward.  It just has the recoil spring in the front of the bolt carrier pulling is closed rather than behind the bolt carrier pushing it closed.



Thanks. That's what I was looking for. The owner's manual I found didn't really explain anything.
2/23/2005 9:20:37 AM EDT
[#7]
This should help...

quarterbore.com/ar15m16/oa93.htm
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