5.56 Caliber

Chrome Molly 4150 Alloy
Black Melonite Finish

1 in 7 twist

Lightweight Contour with a Mid-Length gas system 

Chamber 5.56X45 NATO

1/2X28 Threads

Weighs approx. 25.3 OZ with gas block

Ships with 416 Stainless pin-on lo pro gas block in black melonite finish 
**DOES NOT INLCUDE A GAS TUBE**