SA, Inc. M1A Bolt Data Base

[Different]

I'd like to see when the different types of commercial M1A bolts were used in building M1A rifles. Also, I believe the markings on the rear of the M1A bolts indicate the actual manufacturer. I have some information on this but I would like to test this hypothesis with some additional data. If you know that a given commercial M1A bolt was assembled to the rifle at the factory, please supply the lot code, e.g., A00027, F00155, etc., and the markings on the rear end. You can reply here or e-mail me at leeace99@hotmail.com Here are some data points to begin with.

A prefix = cast B prefix = machined from bar stock F = forged

Lot Code / Rear End / M1A serial number

A00023 unavailable sn 1605XX
A00027 J
A00030 unavailable
B00038 D 56 sn 1370XX
F00038 J M2
F00053 unavailable purchased NIB Sep 2001
F00054 D M3 sn 134855 assembled Jul 2001
F00061 D M4 sn 142XXX assembled Apr 2002
F00062 D M4 sn 143XXX
F00081 unavailable assembled May 2003 sn 155XXX
F00083 J M7 assembled Jul 2003
F00086 J M8
F00101 J M8 sn 163XXX
F00112 J M9 sn 168XXX
F00127 unavailable
F00154 sn 189459
F00155 unavailable
F00158 sn 1949XX
F00170 J N3 sn 203XXX assembled Jul 2007
F00180 J N4 sn 2152XX purchased NIB Apr 2008
F00183 J N2 sn 192260
F00188 J N4 sn 231332
F00203 sn 241XXX manufactured Nov 2009
F00206 sn 247XXX
F00208 J N6 sn 249XXX
F00211 sn 253765 manufactured Jun 2010
F00213 sn 256208 manufactured Aug 2010
F00217 sn 263654
F00218 J N9 sn 264XXX manufactured Feb 2011
F00219 sn 263271 purchased NIB 2011
F00225 J N0 sn 27278X manufactured Jun 2011
F00229 sn 27676X manufactured Sep 2011
F00230 sn 278367 manufactured Oct 2011
F00233 sn 278830 manufactured Oct 2011
F00241 sn 282409 manufactured Mar 2012
F00241 sn 284966

[weasel_master]

Lee, as promised, here's my bolt info for you.

F00062 D M4 sn 143XXX

[Different]

Thank you, weasel master. Congrats on the purchase. Replace the trigger pin. Continue mission.

[M1 Tanker]

Thread stuck...come on your Springfield M14 owners, help Different out!

[Different]

OP updated with addtional data points.

[Different]

Updated on 07-30-11 and 07-31-11.

[Rodan]

Bolt Info :

F00218 SN 264xxx NIB Mfg 2/2011

J N9

[Different]

Got it. Thanks, Rodan.

[Different]

Updated on 11-26-11, 12-04-11, 12-25-11, 04-10-12, and 05-07-12.