# Pyros (bomb) > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Pyros_(bomb) > Markdown URL: https://mediated.wiki/source/Pyros_(bomb).md > Source: https://en.wikipedia.org/wiki/Pyros_(bomb) > Source revision: 1330291354 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) This article is in list format but may read better as prose. You can help by converting this article, if appropriate. Editing help is available. (December 2025) UCAV bomb Small Tactical Munition Raytheon Pyros mockup at IDEX 2017 Type UCAV bomb Place of origin United States Production history Manufacturer Raytheon Specifications Mass 13 pounds (5.9 kg) Length 55 centimetres (22 in) Guidance system Dual-mode seeker: semi-active laser guidance plus GPS-INS Launch platform UCAVs The **Pyros**, previously referred to as the **Small Tactical Munition (STM)**, is a weapon developed by [Raytheon](/source/Raytheon), designed to be used by [UCAVs](/source/UCAV).[1][2][3] ## History Raytheon successfully conducted flight tests in October 2010, and it may be used to arm the [AAI RQ-7 Shadow](/source/AAI_RQ-7_Shadow).[4] In July 2012, Raytheon claimed the STM could be "months" away from fielding.[5] In early August 2012, Raytheon renamed the munition Pyros and completed the first end-to-end test of the bomb.[6] The test validated the weapon's guidance modes, height-of-burst sensor, electronic safe and arm device, and multi-effects warhead.[7] On July 18, 2014, Raytheon conducted the first live-fire test of the Pyros. The munition targeted a simulated group of insurgents planting a roadside bomb and used its height-of-burst sensor to detonate several feet above the ground.[8] ## Design The original model weighs 13 pounds (5.9 kg), and originally had a 7 lb (3.2 kg) warhead.[9] On April 18, 2011, Raytheon successfully tested a new 5 lb (2.3 kg) warhead for the weapon. Though lighter, the new warhead has a significantly improved blast-fragment capability.[10] Designed for low collateral damage, its lethal radius is only 15 ft (4.6 m), with non-lethal effects extending further but lethality dropping dramatically.[11] Dropped from an altitude of 10,000 ft (3,000 m), the Pyros takes 35–40 seconds to reach the ground.[12] ## References 1. **[^](#cite_ref-1)** ["STM / Small Tactical Munition"](http://www.deagel.com/Bombs-and-Guidance-Kits/STM_a002573001.aspx). Retrieved 2010-12-19. 1. **[^](#cite_ref-2)** ["Raytheon tests Small Tactical Munition for UAV's"](https://web.archive.org/web/20101128222426/http://frontierindia.net/defense/raytheon-tests-small-tactical-munition-for-uavs). Frontier India Defense News. Archived from [the original](http://frontierindia.net/defense/raytheon-tests-small-tactical-munition-for-uavs) on 2010-11-28. Retrieved 2010-12-19. 1. **[^](#cite_ref-3)** ["AUVSI: Raytheon designing UAV-specific weapons"](http://www.flightglobal.com/articles/2010/08/26/346610/auvsi-raytheon-designing-uav-specific-weapons.html). Retrieved 2010-12-19. 1. **[^](#cite_ref-4)** ["USMC seeks to arm Shadow, fast and without US Army help"](http://www.flightglobal.com/articles/2010/12/18/351080/usmc-seeks-to-arm-shadow-fast-and-without-us-army-help.html). Retrieved 2010-12-19. 1. **[^](#cite_ref-5)** [Tiny 2-Foot Missile Could Be ‘Months’ Away From Drone War](https://www.wired.com/dangerroom/2012/07/small-drone-missile-soon/#more-86329) - Wired.com, July 13, 2012 1. **[^](#cite_ref-6)** [AUVSI: Raytheon completes end-to-end testing of Pyros bomb](http://www.flightglobal.com/news/articles/auvsi-raytheon-completes-end-to-end-testing-of-pyros-bomb-375250/) - Flightglobal.com, August 7, 2012 1. **[^](#cite_ref-7)** [Raytheon Small Tactical Munition Scores Direct Hit In First Guided Flight Test](https://archive.today/20130628024321/http://www.reuters.com/article/2012/08/07/idUS235019+07-Aug-2012+PRN20120807) - Reuters.com, August 7, 2012 1. **[^](#cite_ref-8)** [Tiny Guided Bomb Scores a Direct Hit on Arizona Test Range](http://www.raytheon.com/newsroom/feature/rms12_pyro_8_7.html) [Archived](https://web.archive.org/web/20140910195906/http://www.raytheon.com/newsroom/feature/rms12_pyro_8_7.html) 2014-09-10 at the [Wayback Machine](/source/Wayback_Machine) - Raytheon news release, 21 August 2014 1. **[^](#cite_ref-9)** ["Raytheon Company: AUSA 2010: Griffin and Small Tactical Munition"](https://web.archive.org/web/20101221235630/http://www.raytheon.com/newsroom/technology/rtn10_ausa/newsroom/news03/index.html). Archived from [the original](http://www.raytheon.com/newsroom/technology/rtn10_ausa/newsroom/news03/index.html) on 2010-12-21. Retrieved 2010-12-19. 1. **[^](#cite_ref-10)** [New Warhead Reduces Size of Small Tactical Munition](http://www.deagel.com/news/New-Warhead-Reduces-Size-of-Small-Tactical-Munition_n000008666.aspx) - Deagel.com, April 19, 2011 1. **[^](#cite_ref-11)** [Raytheon's New Collateral Damage Minimizing Munition](https://www.forbes.com/sites/gregorymcneal/2012/08/10/raytheons-new-collateral-damage-minimizing-munition/) - Forbes.com, 10 August 2012 1. **[^](#cite_ref-12)** [Raytheon promotes Pyros for Middle East UAV operators](http://www.flightglobal.com/news/articles/dubai-raytheon-promotes-pyros-for-middle-east-uav-operators-393141/) - Flightglobal.com, 17 November 2013 ## External links - Media related to [Pyros (bomb)](https://commons.wikimedia.org/wiki/Category:Pyros_(bomb)) at Wikimedia Commons - [Pyros](http://www.raytheon.com/capabilities/products/pyros/) - Raytheon.com v t e Raytheon Subsidiaries A.C. Cossor ELCAN Optical Technologies Raytheon BBN Raytheon Missiles & Defense Raytheon Intelligence, Information and Services HRB Systems Raytheon Polar Services Company Sarcos ThalesRaytheonSystems Products AGM-65 Maverick AGM-88 HARM AGM-129 ACM AGM-154 Joint Standoff Weapon AGM-176 Griffin AIM-9 Sidewinder AIM-54 Phoenix AIM-120 AMRAAM AN/ALE-47 AN/ALE-50 AN/ALQ-249 AN/ALR-67 AN/APG-63 AN/APG-65 AN/APG-70 AN/APG-71 AN/APG-73 AN/APG-79 AN/APG-82 AN/APQ-180 AN/APQ-181 AN/APQ-188 AN/AQS-20A AN/ASQ-213 AN/ASQ-228 ATFLIR AN/AWG-9 AN/AWG-20 AN/AWG-27 AN/MPQ-64 Sentinel AN/MSQ-18 AN/PAS-13 AN/SLQ-32 AN/SPS-49 AN/SQQ-32 AN/TPQ-36 AN/TPQ-37 AN/TPQ-53 AN/TSQ-38 ASARS-2 Beechcraft AQM-37 Jayhawk Tomahawk Controlled Impact Rescue Tool Counter rocket, artillery, and mortar Coyote FGM-148 Javelin FIM-92 Stinger FMRAAM GBU-53/B StormBreaker Ground-Based Midcourse Defense JLENS Lectron Long-Range Engagement Weapon Mark 48 torpedo Mark 54 lightweight torpedo MIM-23 Hawk MIM-104 Patriot Network Centric Airborne Defense Element Next Generation Jammer Paveway Paveway IV Phalanx CIWS Pyros RAYDAC RIM-116 Rolling Airframe Missile RIM-66 Standard RIM-67 Standard RIM-161 Standard Missile 3 Sea-based X-band radar Sentinel SLAMRAAM Space Fence Vigilant Eagle XM501 non-line-of-sight launch system Related RTX Corporation Raytheon 9 Vannevar Bush --- Adapted from the Wikipedia article [Pyros (bomb)](https://en.wikipedia.org/wiki/Pyros_(bomb)) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Pyros_(bomb)?action=history)). 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