Long time, first time

[toeheadAR]

Converting an AR from 556 to 6 mm arc .A friend of mine already has the barrelView attachment 372119
Looks like you're ready to go! What are the barrel specs (length, twist, etc)?

 

[338 dude]

Converting an AR from 556 to 6 mm arc .A friend of mine already has the barrelView attachment 372119

Looks like you're ready to go! What are the barrel specs (length, twist, etc)?

Have not received it from my friend yet it's 18 inches long I believe twist is 1in7