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Posted: 10/18/2012 6:25:19 PM EDT
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I recently acquired an Armalite A2-type upper assembly with a 14.5" M4 profile barrel. According to the vendor I bought it from, it was a police trade in upper from a Law Enforcement (LE) Short Barrel Rifle (SBR) carbine. It is currently being modded to 16" non-NFA barrel length. I contacted Armalite, but they said that they have not offered a 14.5” barreled upper or rifle.
So, with that in mind I am trying to identify the barrel manufacturer and twist. The upper receiver has M4 cuts and a fixed carry handle with 8/3 A2 sights. The bore and chamber are chrome lined. The only markings I can find on the barrel are an “A”, “4”, or inverted “V” at the 12 o’clock position looking at the chamber end, and under the slip ring / barrel nut and gas tube, an illegible number and I think a “M”. The A2 front sight has a forge mark, maybe “4” in a diamond and “2”. I also found out that the upper has night sights. It has a trijicon marked blade front sight and two luminous dots on the large aperture of the rear sight. The handguards are skinny M4 type with single heat shields. I would appreciate any information you can provide. I may can post pics later. |
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