Bushmaster quietly adds 1:7 twist rate to ACR

Posted February 8, 2010 in Rifles by Steve Johnson with 23 Comments
Tags: ACR, bushmaster, rifle, rifles

One of the criticisms levied at the Bushmaster ACR by the internet gun community was that it was only available with a 1:9 barrel twist. Bushmaster has quietly updated their website and added a 1:7 twist rate barrel as an option alongside the 1:9.

The 1:7 twist helps stabilize the heavy 75 grain bullets.

Steve Johnson

I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!