pre-Sept 1994
BD 000073 gray finish, CAF upper forge code, A-1 in a circle carry handle forge code, old style buttstock/nut/buffer, four position receiver extention?, mag fenced lower, small pivot pin hole, weep hole not drilled?, large trigger pins, SPORTER bolt carrier?, blue extractor buffer?, roll marked COLT'S MFG CO. INC, pinned sear block on both sides, no LEO roll markings, blue lable box, peel washer, no "T" numbers, this one is odd in that it has the more modern shaped lower forging used from late 2002 on
09-14-04 through May of 1995
BD 000589 I had a few of these in this range, both uppers and stripped lowers, gray finish, CAF upper forge code, A-1 in a circle carry handle forge code, large trigger pins, SPORTER bolt carrier, blue extractor buffer, roll marked COLT'S MFG CO. INC, peel washer, no "T" numbers, bolts marked MP, and a C below that, uppers marked "4", not "M4"
BD 001742 gray finish, CAF upper forge code, carry handle forge code?, old style buttstock/nut/buffer, four position receiver extention?, mag fenced lower, small pivot pin hole, weep hole not drilled, large trigger pins, SPORTER bolt carrier?, blue extractor buffer?, roll marked COLT'S MFG CO. INC, pinned sear block on both sides, no LEO roll markings, blue lable box, peel washer, no "T" numbers
BD 002835, Gray finish, C AF forge code, old style butt stock, mag fenced lower, small pivot hole, no weep hole, large trigger pins, roll marked COLT'S MFG CO. INC, pinned sear block on both sides, no LEO roll markings, peel washer, no "T" numbers
June of 1995-2002
LBD 00114X gray finish, CAF upper forge code, carry handle forge code?, old style buttstock, modern M4 /nut/buffer/four position receiver extention, mag fenced lower, small pivot pin hole, weep hole not drilled, large trigger pins, SPORTER bolt carrier?, blue extractor buffer?, roll marked COLT'S MFG CO. INC, no pinned in sear block, LEO roll markings, blue lable box, peel washer?, "T" numbers?, barrel marked C MP 5.56 NATO 1/9 HBAR
LBD 001949 carbine is in Finland, and wears a short barrel
LBD 0026xx - Gray finish, C AF forge code, old style butt stock, mag fenced lower, small pivot hole, no weep hole, no pivot pin detent, large trigger pins, roll marked COLT'S MFG CO. INC, SP-1 type sear shelf, M4 ramps, LEO roll markings, no "T" numbers.
LBD 003536 Gray finish, C AF forge code, A-7 carry handle forge code, old style butt stock, modern M4 /nut/buffer/four position receiver extention, mag fenced lower, small pivot hole, no weep hole, no pivot pin detent, large trigger pins, roll marked COLT'S MFG CO. INC, LEO roll markings, no "T" numbers, dimple of right side of take down pin
LBD 0045xx - Gray finish, C AF forge code, old style butt stock, mag fenced lower, small pivot hole, no weep hole, no pivot pin detent, large trigger pins, roll marked COLT'S MFG CO. INC, SP-1 type sear shelf, M4 ramps, LEO roll markings, no "T" numbers.
LBD 0101xx - Gray finish, C AF forge code, old style butt stock, mag fenced lower, small pivot hole, no weep hole, no pivot pin detent, large trigger pins, roll marked COLT'S MFG CO. INC, Web type sear shelf, M4 Ramps, LEO roll markings, no "T" numbers.
LBD 0137xx - Black finish, C AF forge code, old style butt stock, mag fenced lower, small pivot hole, weep hole, pivot pin detent, large trigger pins, roll marked COLT'S MFG CO. INC, Web type sear shelf, M4 Ramps, LEO roll markings, no "T" numbers.
LBD 0138xx - Black finish, C AF forge code, old style butt stock, mag fenced lower, small pivot hole, weep hole, pivot pin detent, large trigger pins, roll marked COLT'S MFG CO. INC, Web type sear shelf, M4 Ramps, LEO roll markings, no "T" numbers.
LBD 0151xx - Black finish, C AF forge code, old style butt stock, mag fenced lower, small pivot hole, weep hole, pivot pin detent, large trigger pins, roll marked COLT'S MFG CO. INC, Web type sear shelf, M4 Ramps, LEO roll markings, no "T" numbers.
mid 2002 to 2004
LBD 016XXX, lower only, black finish, mag fence, small pivot hole, weep hole & front takedown detent pin hole drilled, 2 piece screw type pivot pin, large FCG pins, notched hammer, unmachinned web sear block (not pinned in), roll marks COLT'S MFG. CO. INC., LEO RESTRICTED markings on right side of magwell.
LBD 0165XX looks blackish Grey, old style buttstock marked with 1 and N, modern M4 /nut/H buffer/four position receiver extention, mag fenced lower, small pivot pin hole, weep hole drilled, large trigger pins, roll marked COLT'S MFG CO. INC, no pinned in sear block, LEO roll markings...
LBD 017485 black finish, CAF upper forge code, carry handle forge code?, modern M4 buttstock/nut/buffer/four position receiver extention, mag fenced lower, small pivot pin hole, weep hole drilled, large trigger pins, SPORTER bolt carrier?, blue extractor buffer?, looks like it is roll marked COLT DEFENSE, no pinned in sear block, LEO roll markings, blue lable box, crush washer, "T" numbers?, birth bag shows Dec 02
LBD 01XXXX lower only, mag fenced lower, small pivot pin hole, weep hole drilled, large trigger pins, roll marked COLT DEFENSE, no pinned in sear block, LEO roll markings
Upper only, upper black finish, Diemaco & Anchor Harvey (splintered 'A') forge marks, white T numbers, M4 mark above the gas tube hole, sideways 'V' stamp in front upper of ejection port, black color ejection port cover spring, anodized M4 ramp notches, A & B forge marks on the left side of the carry handle and crush washer.
2005
LBD 023518 black finish, upper forge code?, carry handle forge code?, modern M4 buttstock/nut/buffer/four position receiver extention, mag fenced lower, small pivot pin hole, weep hole drilled?, large trigger pins, SPORTER bolt carrier?, black extractor buffer and gold spring?, roll marked COLT DEFENSE, no pinned in sear block, LEO roll markings, blue lable box, crush washer, "T" numbers?, upper marked "M4"
LBD 023518 black finish, are Cerro/Diemaco upper forge code, modern M4 buttstock/nut/buffer/four position receiver extention, mag fenced lower, small pivot pin hole, roll marked COLT DEFENSE, no pinned in sear block, LEO roll markings, blue lable box.
LBD 028376 black finish, upper forge code?, carry handle forge code?, modern M4 buttstock/nut/buffer/four position receiver extention, mag fenced lower, factory push front pivot pin, large trigger pins, M16 bolt carrier?, black extractor buffer, and gold spring?, roll marked COLT DEFENSE, no pinned in sear block, LEO roll markings, crush washer, "T" numbers?, birth bag shows SEP 05