From the retro section:
Colt M16 Model 640 – SN: 5,016,xxx: Export model of XM177E1. 11.5” barrel with chrome chamber, sliding buttstock, 4” stovepipe suppressor with spacer and no forward assist. Can sometimes be found with correct, Colt proofed upper receiver with forward assist, vice no forward assist. Finish is usually dark black. Serial number can be as high as 5,096,xxx and be accurate. At least three production runs done of this model. Most are in the 5,016,xxx range. Should not have a bayonet lug. Most will have their factory correct barrel and flash hider – all are factory marked barrels – Caveat Emptor as there have been at least 25 sets of XM model gun uppers sold since 1994.
This is an excellent plus condition M16, that has been in a collectors safe for many years.
The moderator has the SN added by the ATF after the M16 was sold. The paperwork for the Moderator/Silencer lists the MFG as Colt.
This will transfer out on form 3s from OH. NOTE - this is a TWO stamp purchase.
$17,500 cash/certified funds.