By David Crane david (at) defensereview (dot) com Photo(s) Credit: Strike Industries (SI) August 28, 2016 Last updated on 8/28/16. A quality action/buffer spring is one of the most important parts in a tactical AR carbine/SBR (Short Barreled Rifle), as it’s crucial for reliable functioning, proper timing, and the required level of weapon durability. So, you shouldn’t skimp on one, …

By Mike Pannone Info@CTT-Solutions.com All photos contained in this article were taken by Mike Pannone for DefenseReview.com, and are copyrighted. Mike Pannone and DefenseReview.com own the copyright on these photos. March 19, 2010 Here’s my question for those that subscribe to the direct impingement fouling concept: I fired 2400 rounds of M193 through a 14.5” M4-type upper receiver from Bravo …

Why M4's have reliability issues…and why it's our fault! By Michael Pannone December 24, 2008 I fired 15,000 rounds through a semi-automatic M4/M4A1-type direct-gas-impingement (DGI) carbine in 31 weeks without a single malfunction attributable to anything except bad ammunition or bad magazines, with a grand total of 9 malfunctions. The least number of rounds fired between cleanings was 960 rounds, …