5.5 inch 9mm AR15 fully QpQ nitrided 1/10 twist
* 9MM Chamber
* Hbar contour
* 1/10 twist rate- which is the best for the 9mm platform in the AR
-does not use any gas blocks or has any gas holes or indexing pin
* 1/2x36 Threaded
* M4 feedramps
* Made from 4150V
* Black Nitride QPQ on the outside and inside
* Button Rifled
please take a look at the BCG for the 9mm which is needed for this platform set up.
if you have any questions about setting up a 9mm upper please contact us.
Can come in different profile then pictured **
Can come in 3 different profiles.