Poor boy but quality suppressed SBR stuff

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Rosco/Sage Dynamics K9 12.5 barrel for about $146 shipped with coupon code overstock

- Rosco Manufacturing K9 12.5" Sage Dynamics 5.56 Hybrid 1:7 Twist Black Nitride Patrol Barrel - AR15Discounts

This 12.5” Enhanced Taper Nitride / Melonite barrel from Rosco Manufacturing is chambered in 5.56 NATO with 1-7 twist rate. Buy with confidence, all barrels are backed by our satisfaction and low price guarantee. Get it now!

ar15discounts.com

Silencerco ASR muzzle brake in 6.5 is being discounted and discontinued. While a bit bigger bore than a 5.56 specific one, once the can is on it won't make a bit of difference and saves about $30

ASR MUZZLE BRAKE - SilencerCo

This Muzzle Brake is designed to redirect a portion of the propellant gasses to counter recoil and reduce muzzle climb, enhancing accuracy and control.

silencerco.com

 

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To clarify on the muzzle brake, it's specifically the 1/2-28 6.5mm which would be just fine on a 5.56.
Obviously the 5/8-24 6.5mm wouldn't work, and is still $92 anyways so not a deal.