Bor rifle The Bor is a Polish bolt - action 7 . 62x51mm NATO caliber sniper rifle . The weapon received the code name Alex during development , after the name of the lead designer Aleksander Leżucha , creator of the 12 . 7x99mm NATO Wilk anti - materiel rifle . After the development phase , the rifle received the military designation ' Bor ' . Development . After 1999 , when Poland became a member of the North Atlantic Treaty Organization , there was a need for new firearms for the Polish Armed Forces compatible with NATO standards . Starting in the early 2000s , at the Mechanical Equipment Research and Developing Centre ( " Ośrodek Badawczo Rozwojowy Sprzętu Mechanicznego " – OBR SM ) in Tarnów , engineer Aleksander Leżucha started his work on a new standard sniper rifle . The work on the Alex had financial backing of the Polish Science Research and Information Technology Ministry in a joint venture construction with the manufacturer OBR SM Tarnów . It is intended that this sniper rifle will ultimately replace all precision rifles of this caliber in Polish service ( currently ( 2009 ) mostly SVD ) . In the summer of 2005 , testing of the new rifle began . The Bor was first unveiled at the 12th International Defense Industry Exhibition MSPO in September 2005 in Kielce . The weapon then went into production in 2006 , when a short series was made . In the spring of 2007 the 7 . 62 mm Bor had passed all the tests required to be introduced into Polish inventories . The Polish Armed Forces planned to acquire 36 Bor rifles in 2007 . In 2008 the manufacturer received an order for the delivery of a batch of 81 Bor rifles chambered for the 7 . 62x51mm NATO cartridge by 2010 . In June 2011 the manufacturer received an order for the delivery of 55 modified Bor rifles chambered for the 7 . 62x51mm NATO cartridge by 2013 . Several years of operations , including missions in Iraq and Afghanistan , has allowed to gain experience with the rifle . In accordance with the suggestions of users several improvements to the sniper weapon system were introduced including a 15 MOA forward canted Rail Integration System mounted over the receiver and a forward mounted tri - rail for mounting aiming optics and a new night vision device ( Carl Zeiss Optronics NSV 80 Night Sight Attachment ) . Further the bipod , trigger , magazine well and bolt action were modified and the original barrel was exchanged for a new barrel with increased durability and corrosion resistance . Design details . The Bor is a bullpup - configuration bolt - action magazine - fed sniper rifle . The configuration provides increased accuracy by allowing a barrel length of , but minimizes the overall length of . Weight is further reduced without sacrificing accuracy by the use of a free - floating fluted barrel . The muzzle is fitted with a double - baffle muzzle brake , which is claimed to reduce recoil by up to 30 % . The " in - line " design of the barrel - receiver group also directs recoil rearwards in a straight line , minimizing muzzle flip . A sturdy adjustable bipod is fitted to the front of the fore - end . The rifle features a fully adjustable buttstock and cheek riser . A folding / adjustable monopod located behind the magazine on the inside of the buttstock can be used to support the rifle in firing position during extended periods of deployment . No iron or emergency sights are provided ; a MIL - STD - 1913 Picatinny rail is mounted above the centerline of the barrel , over the receiver area for mounting various optical sights . The standard telescopic sight is a Leupold 4 . 5 - 14x50 , with sight grid mil - dot reticle , parallax correction and an adjustment range of 100 MOA . Variants . Alex - 338 prototype . Around 2007 , OBRSM Tarnów has begun development of a . 338 Lapua Magnum chambered model under the Alex - 338 development designation ( the manufacturer ' s code for the basic Alex / Bor was changed then to Alex - 762 ) . Early in 2008 the Mechanical Equipment Research and Developing Centre in Tarnów completed the design work and in June 2008 the first prototype was assembled . The model was publicly presented at the MSPO in Kielce , Poland in September 2008 . The . 338 Lapua Magnum version of the Bor is externally slightly different from the earlier 7 . 62 mm rifle . The lower assembly has a different shape . The Alex - 338 weighs 6 . 5 kg without aiming optics and 7 . 3 kg with the standard Leupold telescopic sight mounted . It uses the same 5 - round detachable box magazines as the Finnish Sako TRG - 42 sniper rifle . Like the 7 . 62 mm Bor the Alex - 338 shares some characteristics with the French PGM Précision PGM 338 rifles . The eventual introduction of weapons chambered for the specialized . 338 Lapua Magnum rimless bottlenecked centerfire cartridge developed for military long - range sniper rifle s will be a novelty in the Polish Armed Forces . Alex Tactical Sport 308 Winchester . The Alex Tactical Sport 308 Winchester is a variant based on the Polish Armed Forces 7 . 62×51mm NATO Bor rifle . It is chambered for the . 308 Winchester cartridge - which is very similar to the 7 . 62×51mm NATO cartridge - and is intended for the civilian market . As such the Alex Tactical Sport is adapted to the needs of sportsmen and law enforcement and the design has been simplified - reducing the number of rifle components . The Alex Tactical Sport weighs 5 . 3 kg , has a 660 mm long barrel and feeds from a double stack 10 - round box magazine . It was presented to the shooting public on 8 – 11 March 2013 at the IWA & OutdoorClassics fair in Nuremberg .