Large Capacity Ammunition Magazines Are the Common Thread Running Through Most Mass Shootings in the United States

Large capacity ammunition magazines are the common thread running through most mass shootings in the United States. Since 1980, there have been at least 84 mass shootings (three or more fatalities) where the shooter used large capacity ammunition magazines Large containing more than 10 rounds. A total of 788 people were killed in these shootings, and 1,153 capacity were wounded. This number is likely a significant undercount of actual incidents as there is no consistent collection or reporting on this ammunition data. Even in many high-profile shootings, information on magazine capacity is neither released nor reported. magazines The Violence Policy Center has compiled this list of incidents by analyzing news reports and follow-up investigative reports on mass shootings. Only shootings in which there is specific information that large capacity magazines were used are included.

Columbine shooter armed with Intratec TEC-DC9 assault pistol equipped with high-capacity ammunition magazine Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

San Jose Valley San Jose, CA May 26, 2021 10 dead (including 3 9mm semiautomatic 11 12-round magazines Transportation Shooter: Samuel shooter) pistols 15-round magazines Authority James Cassidy

King Boulder, CO March 22, 2021 Large capacity Sturm, Ruger AR-556 Soopers Shooter (alleged): 10 dead magazine, at least 16 assault pistol grocery Ahmad Al Aliwi rounds store Alissa

Indianapolis, IN ▪ 9mm semiautomatic January 24, 2021 6 dead pistol Shooter (alleged): 30-round magazine Adams Street 1 wounded ▪ Romarm Mini Draco Raymond Ronald assault pistol Lee Childs III

Midland and Texas, 8 dead (including Odessa, TX shooter) AR-15-type assault rifle 4 30-round magazines multiple August 31, 2019 25 wounded locations Shooter: Seth Ator

Dayton, OH 10 dead (including Anderson Manufacturing 100-round drum August 4, 2019 shooter) Dayton AM-15 pistol magazine Shooter: Connor Betts 27 wounded

El Paso, TX August 3, 2019 23 dead Large capacity El Paso WASR-10 assault rifle Shooter (alleged): 23 wounded ammunition magazines Walmart Patrick Crusius

Gilroy, CA 4 dead (including July 28, 2019 ▪ 75-round drum magazine Gilroy Garlic shooter) WASR-10 assault rifle Shooter: Santino ▪ 3 40-round magazines 13 wounded Festival William Legan

2 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

▪ Heckler & Koch USPC Virginia Virginia Beach, VA 13 dead (including .45 semiautomatic May 31, 2019 Beach shooter) pistol Extended magazines Shooter: DeWayne 6 wounded ▪ Glock 21 .45 Municipal Craddock Center semiautomatic pistol

Chicago Chicago, IL 4 dead (including Glock 17 semiautomatic Multiple 17-round November 19, 2018 Mercy shooter) pistol magazines Hospital Shooter: Juan Lopez

Thousand Oaks, CA 12 citizens dead November 7, 2018 (including shooter) Glock 21 semiautomatic Borderline 7 30-round magazines Shooter: Ian David 1 law enforcement pistol Bar & Grill Long officer dead

▪ JP Enterprises .308 Yountville Yountville, CA 4 dead (including assault rifle March 9, 2018 20-round magazine Veterans shooter) ▪ Stoeger 12 gauge Shooter: Albert Wong Home shotgun

Marjory Parkland, FL Stoneman February 14, 2018 17 dead Smith & Wesson 8 30- and 40-round Douglas Shooter (alleged): 17 wounded M&P assault rifle magazines High School Nikolas Cruz

Freehold, NJ December 31, 2017 Century Arms Home in New 4 dead 15-round magazine Shooter (alleged): AK-47 assault rifle Jersey Scott Kologi

First Baptist Sutherland Springs, TX 27 dead (including November 5, 2017 Sturm, Ruger 15 30-round Church of shooter) Shooter: Devin Patrick AR-556 assault rifle magazines Sutherland 20 wounded Springs Kelley

3 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

AR-type assault rifles: Las Vegas, NV ▪ 4 Daniel Defense ▪ 12 100-round Route 91 59 dead (including October 1, 2017 assault rifles magazines shooter) Harvest Shooter: Stephen ▪ 3 FN-15 assault rifles ▪ 6 25-round magazines 489 injured Paddock ▪ 3 LMT assault rifles ▪ 1 40-round magazine Festival ▪ 2 POF assault rifles

UPS San Francisco, CA 4 dead (including MasterPiece Arms June 14, 2017 shooter) 30-round magazine Distribution MAC-10 assault pistol Center Shooter: Jimmy Lam 2 wounded

Burlington, WA Sturm, Ruger September 23, 2016 5 dead 25-round magazine Cascade Mall 10/22 rifle Shooter: Arcan Cetin

hOUSE Mukilteo, WA July 30, 2016 3 dead Sturm Ruger AR-15 30-round magazine pARTY IN Shooter: Allen 1 wounded assault rifle WASHINGTON Christopher Ivanov

Baton Rouge ▪ Tavor SAR assault rifle Baton Rouge, LA 3 law enforcement ▪ Stag Arms M4 variant Large capacity Law July 17, 2016 officers dead assault rifle ammunition magazines Enforcement Shooter: Gavin Long 3 officers wounded ▪ Springfield XD 9mm Shooting semiautomatic pistol

▪ Saiga AK-74 assault Dallas Law Dallas, TX 5 law enforcement rifle July 7, 2016 officers dead ▪ Glock 19 Gen 4 Multiple large capacity Enforcement Shooter: Micah 9 officers wounded semiautomatic pistol ammunition magazines Johnson 2 citizens wounded ▪ Fraser .25 shooting semiautomatic pistol

Orlando, FL ▪ Sig Sauer MCX assault Multiple 30-round 50 dead (including June 12, 2016 rifle magazines, some taped Pulse shooter) Shooter: Omar ▪ Glock 17 9mm together for faster 53 wounded Nightclub Mateen semiautomatic pistol reloading

4 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

Hesston, KS ▪ Zastava AK-variant 4 dead (including February 25, 2016 assault rifle Excel shooter) 30-round magazine Shooter: Cedric ▪ Glock 22 14 wounded Industries Ford semiautomatic pistol

Kalamazoo, MI ▪ Glock 19 February 20, 2016 6 dead semiautomatic pistol Kalamazoo Extended magazine Shooter (alleged): 2 wounded ▪ Walther P99 9mm Parking Lots Jason Dalton semiautomatic pistol

San San Bernardino, CA ▪ Smith & Wesson Bernardino December 2, 2015 14 dead M&P assault rifle Shooters: Syed 4 30-round magazines Inland 21 wounded ▪ DPMS A15 Farook and assault rifle Regional Tashfeen Malik Center ▪ Glock 19 9mm semiautomatic pistol Roseburg, OR ▪ Taurus PT .40 Umpqua 10 dead (including October 1, 2015 semiautomatic pistol shooter) 15-round magazine Community Shooter: Chris Harper ▪ Smith & Wesson 8 wounded Mercer Airweight .38 revolver College ▪ Hi-Point .380 semiautomatic pistol Navy Chattanooga, TN operational 6 dead (including ▪ AK-varient assault rifle July 16, 2015 Multiple 30-round shooter) ▪ Saiga assault shotgun support center Shooter: Muhammad magazines 2 wounded ▪ Handgun & marine corps Youssef Abdulazeez reserve center Emanuel African Charleston, SC June 17, 2015 Glock .45 model 41 9 dead 13-round magazines Methodist Shooter: Dylann pistol Episcopal Roof Church

Marysville- Marysville, WA October 24, 2014 5 dead (including Beretta .40 Large capacity, number Pilchuck Shooter: Jaylen shooter) semiautomatic pistol of rounds unstated High school Fryberg

5 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

Florida Hialeah, FL July 26, 2013 Glock 17 6 dead 17-round magazine Apartment Shooter: Pedro semiautomatic pistol complex Vargas

Santa Monica, CA June 7, 2013 6 dead (including AR-type assault rifle 40 30-round magazines Santa Monica Shooter: John shooter) built from parts Zawahri

Home in Hendersonville, NC May 8, 2013 4 dead (including AR-15 assault rifle 3 30-round magazines North Shooter: Ralph Warren shooter) Carolina III

Sandy Hook Newtown, CT ▪ Bushmaster XM15 December 14, 2012 28 dead (including assault rifle 30-round magazines Elementary Shooter: Adam shooter) ▪ Glock 10mm pistol School Lanza ▪ 9mm Sig Sauer pistol

Minneapolis, MN Accent 7 dead (including September 27, 2012 Springfield XDM shooter) 2 15-round magazines Signage Shooter: Andrew semiautomatic pistol 3 wounded Systems Engeldinger

Oak Creek, WI 7 dead (including August 5, 2012 Glock 9mm Sikh Temple shooter) 3 19-round magazines Shooter: Wade semiautomatic pistol 2 wounded of Wisconsin Michael Page

▪ Smith & Wesson Century Aurora, CO M&P15 assault rifle July 20, 2012 12 dead Aurora 16 ▪ .40 Glock pistol 100-round magazine Shooter: James 58 wounded ▪ Remington model 870 movie Holmes theater 12 gauge shotgun

6 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

Seattle, WA 6 dead (including Colt .45 May 30, 2012 Extended magazine CafÉ Racer shooter) semiautomatic pistol Shooter: Ian Stawicki

Carson City, NV 5 dead (including MAK-90 assault rifle September 6, 2011 20- and 30-round Carson City shooter) (illegally converted to Shooter: Eduardo magazines 7 wounded full-auto) IHOP Sencion

Michigan, Grand Rapids, MI July 7, 2011 Glock 19 semiautomatic 7 dead 12-round magazine Multiple Shooter: Rodrick pistol Locations Dantzler

Tucson, AZ Safeway January 8, 2011 6 dead Glock 19 semiautomatic ▪ 2 31-round magazines Shooter: Jared 13 wounded pistol ▪ 2 15-round magazines parking lot Loughner

Shreveport, LA August 16, 2010 3 dead Assault weapon 30-round magazine Shreveport Shooter: Marcus Donte Reed

Manchester, CT 9 dead (including August 3, 2010 Sturm, Ruger SR9 17- and 15-round Hartford shooter) Shooter: Omar semiautomatic pistol magazines 2 wounded Distributors Thornton

North Hollywood, CA Hot Spot April 3, 2010 4 dead 9mm Glock ▪ 1 17-round magazine Shooter: Nerses 2 wounded semiautomatic pistol ▪ 1 33-round magazine Café Galstyan

7 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

wASHINGTON, Washington, D.C. March 30, 2010 d.c. 3 dead AK-47 assault rifle Extended magazine aPARTMENT Shooter: Nathaniel cOMPLEX Simms

▪ Romarm AK-47 St. Louis, MO 4 dead (including assault rifle 2 “banana-style” large January 7, 2010 shooter) ▪ Tristar 12 gauge capacity magazines ABB, INC. Shooter: Timothy 5 wounded shotgun (capacity not stated) Hendron ▪ Hi-Point .40 pistol

Fort Hood, TX 13 dead FN Five-seveN 5.7mm 30- and 20-round November 5, 2009 Fort Hood 34 wounded semiautomatic pistol magazines Shooter: Nidal Hasan

Collier, PA ▪ 2 9mm semiautomatic 4 dead (including August 4, 2009 pistols LA Fitness shooter) 30-round magazines Shooter: George ▪ .45 pistol 9 wounded Center Sodini ▪ .32 pistol

▪ Romarm AK-47 assault Pittsburgh, PA 3 law enforcement rifle April 4, 2009 ▪ 1 40-round magazine Home in officers dead ▪ Dan Wesson .357 Shooter: Richard ▪ 1 30-round magazine 1 officer wounded Magnum revolver Pennsylvania Poplawski ▪ 12 gauge shotgun

Binghamton, NY American 14 dead (including ▪ 9mm Beretta April 3, 2009 shooter) semiautomatic pistol 30-round magazine Civic Shooter: Jiverly 4 wounded ▪ .45 handgun Association Wong

Oakland, CA March 21, 2009 4 law enforcement SKS assault rifle Large capacity magazine Oakland Shooter: Lovelle officers dead Mixon

8 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

Alabama ▪ SKS assault rifle Alabama, Large capacity magazines, March 10, 2009 11 dead (including ▪ Bushmaster AR-15 taped together for faster multiple Shooter: Michael shooter) assault rifle reloading locations McLendon ▪ .38 pistol

Stafford, VA ▪ WASR-10 assault rifle May 5, 2008 4 dead (including Walt Lou ▪ Smith & Wesson .38 30-round magazines Shooter: Aaron shooter) revolver Trailer Park Poseidon Jackson

DeKalb, IL ▪ Glock 19 9mm pistol Northern February 14, 2008 6 dead (including ▪ Hi-Point 380 33- and 15-round Shooter: Steven shooter) Illinois ▪ Remington 12 gauge magazines Phillip 21 wounded Sportsman 48 shotgun University Kazmierczak

▪ Bushmaster XM15 assault rifle Arvada, CO 5 dead (including ▪ Beretta .40 December 9, 2007 New Life shooter) semiautomatic pistol 2 30-round magazines Shooter: Matthew J. 5 wounded ▪ Springfield Armory Church Murray 9mm semiautomatic pistol

Omaha, NE 9 dead (including December 5, 2007 2 30-round magazines Westroads shooter) WASR-10 assault rifle Shooter: Robert taped together 5 wounded Mall Hawkins

Crandon, WI 7 dead (including ▪ AR-15 assault rifle October 7, 2007 shooter) ▪ Glock semiautomatic 30-round magazine Crandon Shooter: Tyler 1 wounded pistol Peterson

Blacksburg, VA 33 dead (including ▪ Glock 19 April 16, 2007 shooter) semiautomatic pistol 15-round magazines Virginia Tech Shooter: Seung-Hui 17 wounded ▪ Walther P22 pistol Cho

9 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

Goleta, CA Mail Smith & Wesson 9mm January 30, 2006 7 dead model 915 15-round magazine Processing Shooter: Jennifer San semiautomatic pistol Plant Marco

Brookfield, WI March 13, 2005 8 dead (including Beretta 9mm Living Church 2 13-round magazines Shooter: Terry shooter) semiautomatic pistol of God Ratzmann

Birchwood, WI 6 dead November 21, 2004 SKS assault rifle 20-round magazine Hunting Camp 3 wounded Shooter: Chai Vang

Wakefield, MA Edgewater ▪ AK-47 assault rifle December 26, 2000 60-round, large-capacity 7 dead ▪ 12 gauge pump-action Technology Shooter: Michael feeding device shotgun Inc. McDermott

Honolulu, HI November 2, 1999 Glock 17 9mm 7 dead 3 15-round magazines Xerox Shooter: Bryan semiautomatic pistol Uyesugi

Fort Worth, TX ▪ Sturm, Ruger P85 Wedgewood 8 dead (including September 15, 1999 9mm semiautomatic shooter) 3 15-round magazines Baptist Shooter: Lary Gene pistol 7 wounded Church Ashbrook ▪ .380 pistol

▪ Intratec TEC-DC9 assault pistol Littleton, CO 15 dead (including ▪ Hi-Point 9mm Carbine April 20, 1999 Large capacity magazines Columbine shooters) ▪ Savage 67H pump- Shooters: Eric Harris (capacity unstated) 23 wounded action shotgun High School and Dylan Klebold ▪ Savage 311-D 12- gauge shotgun

10 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

▪ 9mm Glock Springfield, OR 4 dead semiautomatic pistol Thurston May 21, 1998 50-round magazine 22 wounded ▪ .22 Sturm Ruger rifle Shooter: Kip Kinkel High School ▪ .22 Sturm Ruger pistol

Jonesboro, AR Westside March 24, 1998 ▪ M-1 rifle 5 dead Shooters: Andrew ▪ Remington .30-06 rifle 15-round magazine Middle 10 wounded Golden and Mitchell ▪ various handguns School Johnson

Connecticut Newington, CT March 6, 1998 5 dead (including Glock 9mm 19-round magazine State Lottery Shooter: Matthew shooter) semiautomatic pistol Headquarters Beck

Orange, CA Caltrans 5 dead (including December 18, 1997 shooter) AK-47 assault rifle 5 30-round magazines Maintenance Shooter: Arturo Reyes 2 wounded Yard Torres

Piper Los Angeles, CA Glock semiautomatic July 19, 1995 4 dead 19-round magazine Technical pistol Center Shooter: Willie Woods

Washington, DC 4 dead (including November 22, 1994 Cobray —11 assault DC POLICE shooter) Extended magazine Shooter: Bennie Lee pistol 1 wounded HEADQUARTERS Lawson

Spokane, WA Fairchild 5 dead (including June 20, 1994 shooter) MAK-90 assault rifle 75-round drum magazine Air Force Shooter: Dean 23 wounded Base Hospital Mellberg

11 Large Capacity Casualties Firearm(s) Ammunition Magazine(S)

Long Island, NY December 7, 1993 6 dead Sturm, Ruger P-89 9mm Long Island 4 15-round magazines Shooter: Colin 19 wounded semiautomatic pistol Railroad Ferguson

▪ Sturm, Ruger Mini-14 California December 2, 1993 assault rifle Oxnard, California 5 dead (including Employment ▪ Smith & Wesson .44 30-round magazine Shooter: Alan shooter) revolver Development Winterborne Department ▪ 12 gauge shotgun

San Francisco, CA Pettit & 9 dead (including ▪ 2 Intratec TEC-DC9 July 1, 1993 40- to 50-round shooter) assault pistols Martin Shooter: Gian Luigi magazines 6 wounded ▪ .45 pistol Law Offices Ferri

Fresno, CA May 16, 1993 Calico assault pistol or Carrillo’s 7 dead 50- or 100-round magazine Shooter: Johnnie rifle Club Malarkey

Royal Oak, MI Regional 5 dead (including 4 “banana-style” November 14, 1991 Sawed-off Sturm, Ruger shooter) large capacity Postal Shooter: Thomas 10/22 rifle 4 wounded ammunition magazines Center McIlvane

▪ Sturm, Ruger P-89 Killeen, TX 24 dead (including 9mm semiautomatic October 16, 1991 17- and 15-round Luby’s shooter) pistol Shooter: George magazines 20 wounded ▪ Glock 9mm Cafeteria Hennard semiautomatic pistol

General Jacksonville, FL 10 dead (including ▪ M-1 rifle Motors June 18, 1990 shooter) 30-round magazines ▪ .38 revolver Acceptance Shooter: James Pough 4 wounded Corp.

12 High-Capacity Casualties Firearm(s) Ammunition Magazine(S)

▪ AK-47 assault rifle Louisville, KY Standard 9 dead (including ▪ 2 MAC-11 assault September 14, 1989 shooter) pistols 30-round magazines Gravure Shooter: Joseph 12 wounded ▪ .38 revolver Wesbecker Corporation ▪ Sig Sauer 9mm pistol

Stockton, CA Cleveland 6 dead (including ▪ AK-47 assault rifle January 17, 1989 shooter) ▪ Taurus 9mm pistol 75-round drum magazine Elementary Shooter: Patrick 30 wounded ▪ unidentified pistol School Purdy

Palm Bay Palm Bay, FL April 23, 1987 2 officers dead Sturm, Ruger Mini-14 5 30-round magazines Shopping Shooter: William 4 citizens dead assault rifle Center Cruse

▪ Uzi Carbine San Ysidro, CA 22 dead (including ▪ Browning 9mm pistol July 18, 1984 shooter) ▪ Winchester 1200 25-round magazine McDonald’s Shooter: James 19 wounded pump-action 12-gauge Huberty shotgun

Dallas, TX June 29, 1984 6 dead Smith & Wesson 9mm Ianni’s 2 14-round magazines Shooter: Abdelkrim 1 wounded semiautomatic pistol Nightclub Belachheb

Pennsylvania, Pennsylvania September 25, 1982 13 dead AR-15 semiautomatic 30-round magazines Multiple Shooter: George Emil 1 wounded assault rifle locations Banks

Oregon Salem, OR May 7, 1981 4 dead Browning 9mm 2 14-round magazines Museum Shooter: Lawrence 19 wounded semiautomatic pistol Tavern Moore

13 This document was last updated on August 3, 2021.

The Violence Policy Center (VPC) is a national educational organization working to reduce gun death and injury. For more information, visit www.vpc.org.