By David Crane david (at) defensereview (dot) com July 10, 2016 Last until dated on 7/10/16. As long as we’re discussing the latest and greatest SureFire products, we should probably mention the new SureFire Optimized Bolt Carrier-Long Stroke (OBC-LS) (temporary name) drop-in BCG (Bolt Carrier Group and H7S Buffer System with longer action spring. Designed for SureFire by legendary infantry …

By David Crane defrev (at) gmail (dot) com July 9, 2010 For quite some time, now, DefenseReview (DR) has been publishing information on just how reliable the direct-gas-impingement (DGI) select-fire Colt M4/M4A1 Carbine/SBR (Short Barreled Rifle) and semi-auto AR-15 carbine/SBR can be if they’re properly set up/sprung and lubricated (and even if they’re not properly lubricated). We have retired U.S. …

By Michael Pannone This article is the follow-up to the author’s first article on the subject, titled "M4/M4A1 Carbine Reliability Issues: Why They Occur, and Why They’re Our Fault!". March 15, 2009 If your Explorer gets a flat does that mean "Fords are unreliable"? If you put bad fuel in your Tundra does that mean "Toyotas run crappy"? Stay with …

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, …

by David Crane defrev at gmail.com December 17, 2007 This article was updated on 12/19/07 and 5/15/09. Ya’ know that Colt M4 Carbine vs. Heckler & Koch (HK) HK416 vs. FN MK16 SCAR-Light (SCAR-L) vs. HK XM8 LAR extreme dust conditions reliability test that the U.S. Army Test and Evaluation Center (ATEC) at Aberdeen Proving Ground (APG), Md. was conducting? …

By Jeff Gurwitch December 30, 2018 With my retirement from the military back in March of 2017, the thought of being able to do another Competition-to-Combat Crossover article hadn’t really crossed my mind…until recently, that is. Thanks to photos and feedback sent from previous team members of their rifle setups, they’re currently employing overseas as of Fall 2018, I have …

By David Crane david (at) defensereview (dot) com December 23, 2017 Last updated on 12/24/17. Earlier this year, at SHOT Show 2017 and SOFIC (Special Operations Forces Industry Conference) 2017, respectively, DefenseReview (DR) filmed some product demos on the Wilcox Industries Fusion AMP Rail powered rail system with a BOSS 300 (or, 300 BOSS) Black Out Sighting System red dot …

By David Crane david (at) defensereview (dot) com Photo(s) Credit: Strike Industries (SI) October 5, 2016 Speaking of innovative new Strike Industries (SI) products, the company just released information on the SI Viper PDW Stock (Buttstock) and SI Sidewinder BUIS (Back-Up Iron Sights) flip-up front and rear sights for tactical AR (AR-15)/M4/M4A1 Carbine/SBR’s (Short Barreled Rifles. The SI Viper PDW …

By David Crane david (at) defensereview (dot) com Photo(s) Credit: Strike Industries (SI) October 3, 2016 About a month ago, DefenseReview published a piece on the new Strike Industries SI AR Carbine Flat Wire Spring, which is, in DR’s opinion, one of the most important tactical AR-15/M4/M4A1 Carbine/SBR (Short Barreled Rifle) components/parts they’ve ever developed and introduced, since the action/buffer …

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, …