a b c d e f Whitta, Gary (March 1992). "Space Gun". Advanced Computer Entertainment. EMAP (54): 31.

Final Fight II" and "Final Lap 2" Top Videos: Video Games of The Year '91" (PDF). Game Machine (in Japanese). No.419. Amusement Press, Inc. 1 February 1992. p.26. The upper two side-by-side shotgun barrels use special 12.5×70mm ammunition (40 gauge), and the lower single rifled barrel uses 5.45×39mm ammunition developed for the AK-74 assault rifle. The TP-82 has a large lever on the left side of the receiver that opens the action, and a small grip safety under the trigger guard that resembles a secondary trigger. [ citation needed] According to NASA astronauts, the gun is very accurate out to about 20–30m (22–33yd). [1] History [ edit ] ZTTL-0038 Zuntata History L'ab-normal 1st" (in Japanese). Taito Corporation. Archived from the original on 2009-02-06 . Retrieved 2009-10-20. The Martlets kept evolving throughout the test period, growing in size and sophistication and reaching greater altitudes. The first Martlet, launched in early January 1962, reached 26 km, but by November 1962, Martlets were reaching altitudes of 66 km. The Martlet 2 missiles, which began testing in April 1963, reached a record 92 km. By the end of 1965, Project HARP fired more than one hundred missiles at heights over 80 km into the ionosphere.Bull, G. V. (Gerald V.) (1988). Paris Kanonen--the Paris guns (Wilhelmgeschütze) and Project HARP: the application of major calibre guns to atmospheric and space research. Murphy, C. H. (Charles H.). Herford [Germany]: E.S. Mittler. ISBN 3-8132-0304-2. OCLC 24066021.

This album was recorded and mixed by Travis Harrison at Serious Business Music, NY, and Stillwater River Lodge [9] Critical reception [ edit ] a b c d e Petrescu, Relly; Aversa, Raffaella; Akash, Bilal; Berto, Filippo; Apicella, Antonio; Petrescu, Florian (2017). "Project HARP". Journal of Aircraft and Spacecraft Technology. 1 (4): 249–257. doi: 10.3844/jastsp.2017.249.257. SSRN 3092679. [ predatory publisher] Anti-satellite weapons, which are primarily surface-to-space and air-to-space missiles, have been developed by the United States, the USSR/Russia, India and the People's Republic of China. Multiple test firings have been done as part of recent Chinese and U.S test programs that involved destroying an orbiting satellite.a b c "Project HARP Leads to U.S.-Canada Study of Low-Orbit Program". Army Research and Development. Vol.5, no.5. May 1964. p.5 . Retrieved February 11, 2020. a b c d e f g h i j k l m n o Bull, Gerald (May 1, 1991). Paris Kanonen - The Paris Guns (Wilhelmgeschütze) and Project HARP (Wehrtechnik und Wissenschaftliche Waffenkunde). Hamburg, Germany: E. S. Mittler & Sohn. pp.144–234. ISBN 978-3813203042. Although the Space Gun's name has the word "gun" in it and it functions like one, it does not fill the spawn criteria for the Arms Dealer, as it is a magic weapon. Its usefulness soon diminishes after reaching Hardmode, as most enemies are too tough to the extent it becomes ineffective. In general, the use of explosive and kinetic kill systems is limited to relatively low altitudes due to space debris issues and so as to avoid leaving debris from launch in orbit.