MSP-9 AR-15 Barrels Posted on October 31, 2012 by Bob Posted in Barrels, Rifles http://media.blubrry.com/handgunworldshow/www.handgunworld.com/wp-content/uploads/MSP9.mp3Podcast: Play in new window | Download (Duration: 30:11 — 10.4MB)Subscribe: RSS Ben Branam talks about AR barrels. What twist rate to pick, should they be chrome lined or not? He also discusses how to choose barrel length and manufacturer. Link: Modern Self Protection