Featured The FBI Reference Firearms Collection: Over 7,000 weapons and growing Recoil Staff September 16, 2013 Join the Conversation The FBI Reference Firearms Collection, begun in the 1930s, now contains over seven thousand different firearms collected over eighty years. They try to keep one example of every type of firearm on hand. Make, model, finish and serial number configuration. Most are from adjudicated criminal cases, some are historically significant, some were purchased and other donated. Read more here. “During the firearms manufacturing process, when the barrels are rifled and the breechfaces are formed or milled, it's gonna create individual tool-marks to that firearm. Those individual tool marks will be transferred onto the bullets cartridge cases…during the firing process. It's those microscopic individual marks that we can compare under the microscope to determine if those bullets and cartridge cases were fired by a particular firearm. ” John Webb, firearms examiner, Firearms/Toolmarks Unit, FBI Laboratory Explore RECOILweb:First Look: Ed Brown M&P Shield MagazinesPreview - JJ Racaza Discusses CCW Lessons From CompetitionYour basic CCW loadoutThe SSVI Tyr Trigger; "Modern Day Mjolnir" (Review) NEXT STEP: Download Your Free Target Pack from RECOILFor years, RECOIL magazine has treated its readers to a full-size (sometimes full color!) shooting target tucked into each big issue. Now we've compiled over 50 of our most popular targets into this one digital PDF download. From handgun drills to AR-15 practice, these 50+ targets have you covered. Print off as many as you like (ammo not included). Get your pack of 50 Print-at-Home targets when you subscribe to the RECOIL email newsletter. We'll send you weekly updates on guns, gear, industry news, and special offers from leading manufacturers - your guide to the firearms lifestyle.You want this. Trust Us.