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38 Law Enforcement Technology April 2014 www.officer.com F I R E A R M S TA C T I C S down pin. It has a perpendicular hole drilled on one end. Rather than struggle with inserting the pin and spring, one inserts them through the drilled hole, then rotates the tool, trapping the detent pin. This is a time-saver that costs less than five dollars. Another "must have" is a wrench to remove the castle nut, the large cylin- drical nut that locks the buffer tube to the receiver. There are multitools that work but I like the one I keep in my shooting bag (See What's in your range Bag? December 2013). It's a Brownell's Multitasker, a pocket-sized folding pliers-type tool with six AR-15 special- ized tools. I built my second AR-15 this month using only a multitasker and some masking tape. I also recommend using a Spikes Block from Ergo Grips, a simple fixture that goes in the mag well. It is bolted to a table or similar figure while one works on the AR-15. After I've done all of these things, I put on the Larry Pottinger Show and follow him step by step. I know I can do this all in my head. However, Larry has led me through lots of gunsmithing tasks for a long time. After the build When I finished my Del-Ton, I packed up and went to the range. I sighted it in only a few rounds, but I recognized immediately a few things that I'm going to add. This is another thing Dave Dunlap and I discussed. I don't like standard uppers with fixed front sights. The fixed sight is also where the gas tube resides. When one removes the sight, one must replace it with a gas block. I'll probably add a PRI low profile gas block and a lightweight fore-end. The trigger provided with the Del-Ton felt pretty good for a standard trigger. This gun did not like my reloads, but it fed the DTTactical 55gr FMJ-BT car- tridges flawlessly. I'll be shooting some DTTactical cartridges for next month's article. Let's see what they can do at car- bine ranges. ■ Lindsey Bertomen is a retired police officer and retired military small arms trainer. He teaches criminal justice at Hartnell College in Salinas, California. Lindsey has taught shooting techniques for over a decade. He enjoys competing in shooting sports, running and cycling events and welcomes comments at lbertomen@letonline.com. SAFE FOR YOU, NOT FOR THEIR STASH PERFECT VISION ® V20 VIDEOSCOPE CAMPBELL/HARRIS SECURITY EQUIPMENT COMPANY cseco.com | info@cseco.com | 510.864.8010 The Perfect Vision ® V20 Videoscope is the latest technology from CSECO, the makers of the Buster K910B and the CT-30 Detection Kit. It's also the ONLY scope certifed SAFE for use in fuel tanks. Buster K9108 CT-40 Detection Kit Contact CSECO today to learn more about the FIBERSCOPE TRADE-IN PROGRAM and the new CT-40 Contraband Team Kit • Large color LCD display – 3.5x zoom - 10x resolution of fberscope • Push-button photo/video capture – NO attachments • Video chip imaging - NO fberoptic cables to break • Built-in LED light & 6 hour rechargeable battery • CERTIFIED SAFE by UL Circle 52 on Reader Service Card COMPANY READER SERVICE NO. Brownells 53 Colt 54 DEL-TON 55 DoubleTap Ammo 56 FrogLube 57 Midway USA 58 Precision Reflex inc. 59 For more information on these companies, circle the corresponding number on the Reader Service Card M O R E I N F O R M A T I O N LET_34-38_FirearmsTactics0414.indd 38 3/20/14 11:14 AM