50TH ANNUAL NDIA SMALL ARMS SYMPOSIUM AND EXHIBITION 25mm Anti-Material Payload Rifle (AMPR-XM109) 50TH ANNUAL NDIA SMALL ARMS SYMPOSIUM AND EXHIBITION This briefing details the aspects of the XM109 25MM Anti-Materiel Payload Rifle. Neil Lee U.S. Army ARDEC AMSRD-AAR-AEW-S(D) Bldg 65 Picatinny, NJ 07806-5000 (973) 724-6743 nelee@pica.army.mil Sergio Aponte U.S. Army ARDEC AMSRD-ARR-AEW-M (D); Bldg 7 Picatinny, NJ 07806-5000 (973) 724-3445 saponte@pica.army.mil Ralph Mazeski U.S. Army ARDEC AMSRD-AAR-AEM-I; Bldg 65 Picatinny, NJ 07806-5000 (973) 724-6453 rmazeski@pica.army.mil

Questions Briefing Agenda: Neil Lee: The IPT Facts & Claims The Barrett 25mm Rifle System Project Schedule Sergio Aponte: Battelle Weaponeering Study Niceville Armor Piercing Tech Demo Technical Challenges Recoil Mitigation Ralph Mazeski 25mm Ammunition & etc. Questions The attached agenda will be followed. I will address the weapon system and its benefits. Sergio Aponte will address the technical issues. And Ralph Mazeski will provide information on the ammunition. This will be followed by a brief period of questions and answers if time permits.

IPT Arrangement Sponsor The U.S. Special Operations Command Neil Lee Sergio Aponte Steve Small, Ph.D. CPT Bowser USSOCOM Weapon Developer Ronnie Barrett Bob Gates Bob Galleazzi M107 PM Crew Served Weapons Cape Aero Space Charles Poff Recoil Mitigation Ammunition Issues AETC Ralph Mazeski Dennis Durkin Ammunition Developers GDOTS Matt Solverson Kaman Dayron Recoil Mitigation Gamma Tim Lindsay

Facts & Claims Facts A known commodity: The Barrett M107 is combat proven and User respected—the XM109 possesses much of the same architecture as the M107 Ammunition Availability: The 25mm XM109 will use the self-same 25mm armor-piercing ammunition as the Objective Crew-Served Weapon (XM307) Claims The 25mm XM109 offers significantly greater lethality than the .50 caliber XM107 against C4I SAR targets Near term: Penetration potential from optimizing warhead promises over 1 ½ -inches of RHA at 1200 meters and beyond Long Term: Optimized AP ammunition offers 2 + inches of HHA This weapon is based on the M107, and will use the XM1049 HEDP ammunition currently under development at GD-OTS. Interim ammunition provides penetration in excess of 1.5 inches of RHA at 1200 meters. While the XM1049 ammunition will provide over 2 inches of penetration of HHA at ranges up to 2000 meters. Thermobaric ammunition solutions are also being explored.

XM107 Baseline System Caliber .50 BMG (12.7 X 99mm) Chamber Specifications   Caliber .50 BMG (12.7 X 99mm)   Chamber Chambered for commercial and MATCH ammunition   Operation Semi-Automatic - Short Recoil Cycle   Barrel Length 29 inches (73.67 cm)   Rifling Twist 1 turn in 15 inches (38.1 cm)   Rifle Weight 28.5 pounds (12.9kg)   Overall Length 57 inches (144.78 cm)   Disassembled Length 38 inches (96.52 cm) The M107 has the following listed specifications and serves as a baseline for the XM109.

SYSTEM CHARACTERISTICS WEAPON SYSTEM HAS RAPID CONVERSION CAPABILITY FROM M107 TO XM109 XM109 & M107 HAVE 70% COMMONALITY MAJORITY OF REPLACEMENT PARTS ARE CURRENTLY IN SUPPLY SYSTEM WEAPON SYSTEM IS 10 INCHES SHORTER THAN M107 CAPABLE OF DEFEATING MOST LIGHT ARMOR AND MATERIEL TARGETS OUT TO 2000 METERS Conversion from M107 to Xm109 may be accomplished in under 2 minutes in a field environment. Logistical support is readily available currently for most of the parts.

XM109 Prototype Caliber 25mm Chamber Specifications   Caliber 25mm   Chamber Chambered for OCSW – XM307 ammunition   Operation Semi-Automatic - Short Recoil Cycle   Barrel Length 29 inches (73.67 cm)   Rifling Twist TBD   Rifle Weight <35 pounds (15.9kg)   Overall Length 46 inches (144.78 cm)   Disassembled Length 38 inches (96.52 cm) The system is nearly one foot shorter and adds approximately six pounds in overall weight.

Project Schedule Fragmentation Testing of Baseline Ammunition May ’04 Limited Safety Release scheduled for August ’04 3 weapon systems delivered to APG 1675 total rounds of AP and TP ammunition Initial Delivery of XM1049 HEAP ammunition September ‘04 User Assessment scheduled for October ’04 10 weapon systems delivered to SOCOM 2000 total rounds AP and TP ammunition User Assessment Report expected December ‘04

Battelle Weaponeering Study Summarized Results: Probability of Target Defeat Big Bird Radar At 800 meters the XM109 required half as many rounds as the XM107. BMP-3 At 800 meters the XM107 required 2 times more rounds than the XM109. The results compiled from our Batelle weaponeering study indicate that both the Big Bird Radar and BMP-3 could be defeated with half as many rounds when compared to .50 caliber systems.

Range Single Shot Test Barrel Using Mk 211 Ammunition (MoA) Single Shot Test Barrel Using 25mm TP OCSW Ammunition (MoA) M107 OTF2 (SN 3629) Using Mk 211 Ammunition XM109 Using 25mm TP OCSW Ammunition (MoA) 600 meter .71 2.49 2.30 2.53 800 meter 1.34 2.76 2.74 3.33 The following results were obtained during range testing of the Mann barrels and rifles of M107 and XM109.

Tech Demo – 19 June 2003 Set-up: Location: High Speed and normal speed video record of pre-demo and demo at both target (perpendicular) and weapon (side view) locations 6 foot x 6 foot x 1 inch thick armor target at 207m (RHA) All shots fired by remote operation Location: Niceville, Florida Technical demonstration was conducted on 1 inch RHA at 207 meters.

Training-Practice and Armor-Piercing Ammunition, and the Target Effects 19 June 2003 – Niceville, FLA. As may be seen from the video the round fully penetrates the plate with massive terminal ballistic effects.

CARTRIDGE, 25 MILLIMETER: Target Practice (TP) XM1050 20,000 rounds built and fired to date Mann barrel dispersion ~0.25 mils @ 200yards System dispersion ~1.1 mils @ 1350 meters Simple two piece projectile construction Integral rotating band Common cartridge case, primer and propellant The XM 1050 Target practice round is ballistically equivalent to the XM1049

CARTRIDGE, 25 MILLIMETER: Armor Piercing, XM1049 Off the shelf nose fuze with spitback Advanced molybdenum shaped charge liner Over 2 inches of armor penetration (Lab) Flight tested to 963 Meters Dispersion ~ 0.75 mils This hole shows the behind armor capability of the XM1049 HEDP. Behind Armor Witness Plate First Generation

CARTRIDGE, 25 MILLIMETER: Armor Piercing, XM1049 Improvements: Remove nose fuze = greater penetration Base fuze utilizes existing HE safe and arm Reduced parasitic weight Addition of self destruct feature Provides basis for high explosive dual purpose (HEDP) airbursting capability This sketch depictss the design characteristics of the XM1049 ammunition. Next Generation