10 x 7.5 inch 5.56/.223 NATO barrel - this is bulk order and you will receive 10x 7.5 inch 302 black .
*barrel is 100% completed in house
* Barrel is done in a NITRIDE QpQ finish which is a dark black
*pistol gas length gas system
* m4 feed ramps
*.750 gas shoulder
* 1x7 twist
*1/2x28 thread pattern
*shoots both 5.56 and .223.