AR Build Parts Supplier(s)
Bravo Company
Black Rifle Works
Brownells
DelTon
ADCO
CMMG
How heavy the bullets you want to shoot define the barrel twist.
1/9 will work up to M855 62gr. Anything heavier needs the 1/7
Good luck on parts.
Complete thread:
- AR Build Parts Supplier(s) - 
RidinLou, 
2013-06-29, 11:31 
- AR Build Parts Supplier(s) - Gunner, 2013-06-29, 12:03
 - AR Build Parts Supplier(s) - Miles, 2013-06-29, 16:31
 - AR Build Parts Supplier(s) - Bob Hatfield, 2013-06-29, 18:37
 - Look at DSA Arms bravo Company Aimsurplus and CCMG - Rob Leahy, 2013-06-29, 23:11
 - Selections based on bullet wt - RidinLou, 2013-06-30, 12:21
 - Not so much specific vendors...... - John Meeker, 2013-06-30, 17:02