| 词条 | BMS Cam rifle |
| 释义 |
| name = BMS Cam | image = | image_size = 300 | alt = | caption = | type = Precision rifle | origin = Great Britain | is_ranged = yes | service = | used_by = Mostly hunters and sport shooters. Also some use by British police and military units, American police[1] units | designer = | design_date = 1980[2] | manufacturer = BMS Trading Ltd[3] | unit_cost = | production_date = | number = | variants = Milcam, Comcam, Snicam, Covcam, Polcam[4] | spec_label = | weight = 3.6 to 5 kg (depending on configuration)[1] | length = 1000-1200 mm[2] | part_length = 500-620 mm[2][8] | cartridge = 5.56×45mm NATO | action = Bolt action | range = 500-600 m[9][2] | feed = STANAG magazine | sights = Integrated Weaver rail for mounting a scope sight. Some older models came with iron sights and/or a dovetail rail. | ref = }} The BMS Cam rifle is a series of British bolt action rifles made by BMS Trading Ltd chambered in the 5.56×45mm NATO cartridge and using STANAG magazines.[3] The rifle was introduced in 1980[4] and is still in production as of 2018.[3] The rifle has been popular for hunting and sport shooting in the UK, and has also seen some limited use as a sharpshooter rifle by some British police and military units as well as some American police units. TechnicalThe name of the rifle comes from the unique camming mechanism design of the bolt which is used in order to provide a mechanical advantage to ensure chambering and primary extraction with the AR-type barrel and bolt head used on the rifle. With its eight bolt lugs the rifle has a bolt lift of only 22.5°,[8][5] which is very short compared to the 60 to 90° bolt lifts found on most other rifles.[6][7][8] Patents for the camming action were applied for in 1988, but were refused in 1992 as details had been made public by the makers before the application was submitted.[9][10] The mechanism cocks on closing similar to the Lee–Enfield,{{citation needed|date=December 2018}} and the trigger unit is very similar to the Mauser K98.[11] Due to its firing pin design being similar to the Mauser, the Cam rifle has a lock time comparable to the Mauser.{{citation needed|date=December 2018}} The rifle has a relatively small and constricted ejection port[5] which enhances receiver stiffness. Trigger pull weight can be adjusted using a hex key, and the safety operates similarly to the Garand rifle.[12] The trigger guard is oversized to facilitate operation with gloves in cold weather.[13] VariantsNumerous versions[14] and upgrades[5] have been made over the years. The latest versions all have a carbon fiber composite stock.[15] Options for mounting optical sights have also varied thoroughout the years, from iron sights only on the first models, to various dovetail rails on later models. All current models have an integrated Weaver rail (not Picatinny compatible).[5]
Models
See also
References1. ^1 Paul Mulcahy’s Pages - British Sporting Rifles C-Z 2. ^BMS Milcam Rifle Series - Internet Movie Firearms Database - Guns in Movies, TV and Video Games 3. ^1 2 Official webpage of BMS Trading Ltd 4. ^1 2 3 ohrana.ru - The Milcam rifle (Russian) 5. ^1 2 3 Thames Valley Guns - BMS CAM Rifle 6. ^[https://www.browning.com/news/tech-terms/60-bolt-lift.html Browning.com - 60° bolt lift] 7. ^[https://www.rifleshootermagazine.co.uk/features/ask-the-experts/what-difference-do-the-number-of-bolt-lugs-make-1-5281148 What difference do the number of bolt lugs make? | Ask the experts shooting queries | Rifle Shooter] 8. ^[https://gundigest.com/rifles/rise-fat-bolt-sporting-rifle The Impressive Rise Of The Fat-Bolt Rifle | Gun Digest] 9. ^[https://patents.google.com/patent/GB2218497A/en GB2218497A - Bolt action rifle with camming bolt handle - Google Patents] 10. ^[https://patents.google.com/patent/GB8811217D0/en GB8811217D0 - Bolt action rifle with camming bolt handle - Google Patents] 11. ^Milcam Sporting Rifles - MilCam 5.56mm Rifle - Ser No: 110 12. ^1 2 Security Arms | Firearm Photo Archive - Milcam 5.56mm Sniper rifle 13. ^1 weaponland.ru - Sniper rifle BMS Milcam HB / Snicam / Polcam (UK) - description, specifications, photos 14. ^1 BMS Milcam Rifle Series - Internet Movie Firearms Database - Guns in Movies, TV and Video Games 15. ^Thames Valley Guns - Gallery One 16. ^Firearms and small arms, description and specifications - BMS Milcam / HB / Snicam / Polcam External links
3 : Bolt-action rifles|Rifles of the United Kingdom|5.56 mm firearms |
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