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The 6.5mm Grendel is an intermediate cartridge jointly designed by British-American armorer Bill Alexander, competitive shooter Arne Brennan (of Houston, Texas) and Lapua ballistician Janne Pohjoispää, as a low-recoil, high-precision rifle cartridge specifically for the AR-15 platform at medium/long range (200–800 yard).
6.5mm Grendel, The Grendel uses the same head and rim from the .220 Russian and the 7.62x39 with a rim diameter of 0.441-0.449. The 6.5 Grendel bullets have a true diameter of 6.71mm / 0.264" and the 6.5 Grendel case can be formed from abundant 7.62x39 cases with a neck re-sizing die, and fire-forming a slight change to the shoulder, if the ...
M19, is based on the well-tested Kalashnikov principle, chambered in the 6.5 mm Grendel or 7.62×39 mm cartridge. [2] The Zastava M19 is gas operated with a rotating bolt locking system. The reliability of functioning in different climatic and field conditions has been confirmed by strict testing methods in accordance with military standards.
6.5mm Grendel (6.5×39mm), cartridge designed for the AR-15; 6.5mm Creedmoor, centerfire rifle cartridge; 6.5mm Remington Magnum, belted bottlenecked cartridge; 6.5×42mm, also known as 6.5 MPC (Multi Purpose Cartridge), centerfire rifle cartridge; 6.5×47mm Lapua, smokeless powder rimless bottlenecked rifle cartridge
A guide to the recoil from the cartridge, and an indicator of bullet penetration potential. The .30-06 Springfield (at 2.064 lbf-s) is considered the upper limit for tolerable recoil for inexperienced rifle shooters. [2] Chg: Propellant charge, in grains; Dia: Bullet diameter, in inches; BC: Ballistic coefficient, G1 model; L: Case length (mm)
The larger diameter, shorter 6 mm cartridge is optimized for these shorter barrel lengths, and would perform less efficiently from rifle-length barrels. The round's muzzle energy is 831 ft⋅lbf (1,127 J) versus 792 ft⋅lbf (1,074 J) for a 5.56 mm bullet, again from the same 10" standard barrel.
In August 2009 Robinson Arms began shipping 3 different sized upper receivers enabling PDW and pistol style variants: [11] Standard Upper Receiver – The original length and designed to support barrel lengths from 11" to 18.6". Mini Upper Receivers – 15.25" long and designed to support barrel lengths from 9" to 18.6". Primarily intended for ...
The OA-93 is an AR-15 derivative pistol manufactured by Olympic Arms.Lacking a buttstock or buffer tube, the OA-93 disperses recoil through a specially designed flat top upper receiver similar to the Armalite AR-18.