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The Carbon 15 line [2] [3] is closely based on the Colt AR-15 design. Carbon 15 rifles have carbon fiber upper and lower receivers which are lighter than the standard aluminum and steel construction of AR-15 receivers. Carbon 15 rifles are generally chambered in 5.56×45mm NATO/.223 Remington, [4] although Bushmaster also produced 9×19mm ...
Carbon (6 C) has 14 known isotopes, from 8 C to 20 C as well as 22 C, of which 12 C and 13 C are stable.The longest-lived radioisotope is 14 C, with a half-life of 5.70(3) × 10 3 years. . This is also the only carbon radioisotope found in nature, as trace quantities are formed cosmogenically by the reactio
Three isotopes occur naturally, 12 C and 13 C being stable, while 14 C is a radionuclide, decaying with a half-life of 5,700 years. [15] Carbon is one of the few elements known since antiquity. [16] Carbon is the 15th most abundant element in the Earth's crust, and the fourth most abundant element in the universe by mass after hydrogen, helium ...
This is a partial list of molecules that contain 15 carbon atoms. Chemical formula Synonyms CAS number C 15 F 33 N: perfluorotripentylamine: 338-84-1 C 15 H 8 O 5 ...
Isotopes of carbon#Carbon-15; To a section: This is a redirect from a topic that does not have its own page to a section of a page on the subject.
15 carbon-20: 16 francium-199: 16 protactinium-214: 17 sodium-31: 17 thorium-210: 17 boron-13: 17.33 radium-220: 17.9 neon-28: 18.9 livermorium-291: 19 radon-213: 19 ...
15 4347: 18 127: C 15 H 32: n-pentadecane: 16 10 359: 50 699: C 16 H 34: n-hexadecane: cetane 17 ... List of compounds with carbon numbers 50+ References This page ...
Carbon 15 was a lightweight AR15 available as rifles or pistols. It saved weight by using polymer in the upper and lower receivers. It saved weight by using polymer in the upper and lower receivers. Some models also removed the forward assist and the dust cover and used a thinner barrel design to save weight.