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In the video he said the ar10 spring was for A2. What about other configs?
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@snakeyes711
I use the 308 Tubbs Flatwire in all my large Frame AR's .
6.5CM, .308.... various barrel lengths from 14.5", 16", 18", 20", 22".... various gas system lengths ( middie and rifle length ) various gas port sizes.
With DPMS and Armalite carbine pattern stocks , and A2 rifle length stock setups..
And Adj. GB's on every large frame firearm ( SLR's opened 6 clicks from closed of the available 15 )
And heavy buffers in all stock patterns....( again all with the Tubbs .308 flatwire in all patterns )
DPMS Carbine pattern , KAK 2.5" 5.3oz
Armalite Carbine pattern 3.25" 5.4oz
Rifle A2 KAK 9.3oz 308 length rifle buffer
And All function great.... ( Even with the short PSA / DPMS gas tube in all nine uppers, Lol )
FWIW... I tried all sorts of other recoil springs and buffer weights prior to falling for the 308 Tubbs and heavy for stock setup buffer weights.
Every applicable Sprinco... ( the red and orange seriously slammed the BCG in to battery hard, and caused noticable muzzle dip. )
I even use a 308 Tubbs in my 9MM Colt pattern blowback AR, with 7.5ish oz buffer weight.... that application dramatically changed the "vigorious" cycling of the 9MM blowback. I have said this before... the 308 Tubbs in the 9MM blowback changed cycling from Linda Blair in the Exorcist,.... to a consistent smooth functioning Winnie the Pooh.