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AR15.COM
7/27/2012 2:47:05 PM EDT
What is the anticipated conditions for the Standard Buffer Spring that was shipped with the rifle?  Subsonic Rounds with a suppressor?
I have not run across anything in the supplied documentation.
7/27/2012 3:03:41 PM EDT
[#1]
IIRC, LT ships with the 'heavy' spring in the rifle set for 5.56 spec ammo and the other spring is for light loads that won't cycle the Rifle.
 
7/27/2012 3:09:46 PM EDT
[#2]
Thanks, that's what I figured.
7/27/2012 3:23:06 PM EDT
[#3]



Quoted:


Thanks, that's what I figured.


Again, IIRC from reading reports here, the other spring tube should be marked, that its a lighter spring or something like that. I'm still waiting to get my first full Rifle from LT, so I have to be satisfied shooting my Stealth till then. I think they started just including the extra spring after some people had problems shooting .223 ammo in their Rifles. I don't think many, if any, had problems with full power 5.56 spec ammo.



 
7/27/2012 4:01:14 PM EDT
[#4]
I put the light load spring for my rifle because we shoot 223 winchester ballistic silver tip as duty ammo and I plink a lot with 223 55gr ammo, mostly PMC and american eagle. I sometimes shoot winchester white box 556. So basically my train of thought is.

The white spring will cycle "light" loads and heavy loads, but the red spring is best suited for "heavy" loads. So why not run the spring that will cycle everything I put in it
7/27/2012 4:08:17 PM EDT
[#5]



Quoted:


I put the light load spring for my rifle because we shoot 223 winchester ballistic silver tip as duty ammo and I plink a lot with 223 55gr ammo, mostly PMC and american eagle. I sometimes shoot winchester white box 556. So basically my train of thought is.



The white spring will cycle "light" loads and heavy loads, but the red spring is best suited for "heavy" loads. So why not run the spring that will cycle everything I put in it


Well running a lighter than needed spring is harder on the Rifle or Pistol. It increases the speed that the bolt or slide travels at. So it does 'batter' the firearm more than the 'just right' one. This is more important in FA guns that SA ones, but it still applies.



 
7/28/2012 8:00:46 AM EDT
[#6]
when did larue start providing the lighter spring when shipping rifles?

i received my predatar 5.56 back in September 2011 and no extra spring supplied only heavy spring installed in weapon.
7/28/2012 1:21:59 PM EDT
[#7]
Quoted:
when did larue start providing the lighter spring when shipping rifles?

i received my predatar 5.56 back in September 2011 and no extra spring supplied only heavy spring installed in weapon.


I think it's included with OBR rifle and Costa rifles, not the PredatAR. I took delivery of a PredatAR a couple weeks ago, and it did not include another spring.  The Costa rifle I picked up today had one included.