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300 fireball upper

spencerhenry

New member
time to start another project and need to move this one for funds.

FN flattop upper, shilen select match stainless barrel,dpms 2 piece float tube, pistol length gas system, complete with charging handle, bcg. barrel is 1-8, threaded 1/2-36, 16.5" long. have over $750 in it, asking $650 or possible trades. i dont know how to post pictures here, so if interested email me.
 
Just curious, is the 300 Fireball the same as the 300 Whisper, which is now the same as the 300 Blackout?
 
I'm pretty sure Fireball and Whisper are the same. AFAIK you can run Fireball/Whisper ammo in a Blackout chamber but shouldn't run Blackout ammo in a Fireball/Whisper chamber. It's similar to the .223 vs 5.56 issue as far as chamber dimensions and pressure designs.
 
I was told the Whisper was the same as the 300 Blackout . . . I think that is true. And I am under the impression that the Blackout can be fired in the Whisper chambered guns.
 
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