So i seem to have answered some of my own questions.
Below is an excerpt from M14 History and Development available from w ww.milsurps.com
Chinese M14 Rifle Export to Canada
Alan Lever of Lever Arms Service Ltd. (Vancouver, BC) imported Norinco M14 type rifles into Canada in 1988. Century Arms International imported both Norinco and Poly Technologies M14 type rifles into Canada during the early 1990s. Some Norinco receivers imported around 2002 to 2003 by Marstar Canada and by Lever Arms Service in 1988, e.g., serial number AL000680, had a blued finish instead of a phosphate coating. These receivers lack the scope mount vertical groove lug and boss. Instead, these receivers are flat on the left side have the bolt hole drilled and tapped and the horizontal groove is still present. At least some of these blued receivers are marked Model 305 7.62X51 on the left side of the receiver, e.g., serial number AL000680. At some point, Norinco serial number AL000844 found its way to Finland from Canada. Dark International Trading Company (Ontario) imported Norinco M14 rifles from 1997 until at least September 2007. From September 2003 until November 2008, Marstar Canada, Inc. (Vankleek Hill, Ontario) imported Norinco M14 rifles into Canada with the receivers exhibiting the CJA marking seen on American imports. These complete rifles were assembled with new Chinese manufacture parts but the receivers were the last of the residual inventory from production in the mid-1990s. At least some of these rifles are marked with the year of assembly, e.g., 2007, on the right hand side of the receiver. By 2007, the production machines used to manufacture Chinese semi-automatic only M14 receivers had been laid up for many years.
Aside from the blued finish M305 models lacking the receiver scope mount geometry, the Norinco rifles imported by Marstar had the slotted flash suppressor and scope mount recoil lug. The left side of each receiver imported in 2004 and 2005 was stamped as follows: first line - M14 .308 second line - CJA SFLD MICH third line – NORINCO MADE IN CHINA and the six digit serial number. A May 2006 import was marked on the left side of the receiver as follows: first line - M14 .308 NORINCO 00###X second line - MADE IN CHINA SFLD, MI. The fit and finish of Norinco rifles entering Canada after 2000 are judged to be better than that found on the 1980s and 1990s M14 type rifles exported to the United States. These M14 rifles still have chu wood stocks. Reportedly, USGI bolts fit properly in these post-‘00 assembled Norinco M14 rifles. The bolt hardness is also markedly higher than bolts exported to the United States before 1994. Marstar Canada marketed the Norinco M14 rifles as the M-305 and backed them with a one year parts and labor warranty. Marstar Canada received subsequent export shipments of Norinco M14 rifles from China in November 2006, November 2007 and the last one in November 2008.
So, there we have that part of my question, so the theory of my receiver being manufactured in March of 1994 could be valid. Any idea what the rest of these numbers could mean? 4 3 49 39 24