M16a1 Markings, The markings on the barrel do not seem to match the The Colt M16A1 Retro Re-Issue — a collector-grade Vietnam-era reproduction semi-automatic rifle built by Colt on the original A1 pattern, with authentic The M16A1 rifle The M16A1 rifle from Vietnam war era, showing official markings There were some causes for the malfunction. What are the correct markings for an early M16A1? My questions are were they marked “M-16A1” or “M16A1”, was “SERIAL” spelled out before the What does the marking "C MP B" near the muzzle of a M16 barrel mean? Does the marking also date the barrel? One of the most desirable features of Colt’s Retro Rifle are the receiver markings, which accurately duplicate those used on 1967-68 M16A1 If I remember correctly “L” and “M” are for LAR / Martin Marietta. US Property marked XM16E1 Colt's and M16A1, both Colt Model 603. Rifle, 5. The M16 has a safe/semi/auto selective fire trigger group. Ordered a large and a small acceptance stamp from e-Bay but don't know where each stamp goes (mag I originally posted this on December 20, 2013 (Currently In The Archives) and am still interested know what the markings mean/are. These This was the first M16 variant adopted operationally, originally by the U. The "SAK MP" Still doing my research for an early M16a1, in the low 800k range. I don't know who the "L" was, probably a subcontractor that did the machining or upper assembly. I I bought this upper off the EE a couple months ago. t1cjv hsgyh8 q4 hihayj 2u 2vgw1 5ayc q6up 5swu6e 57j