For those who are interested, the following is an incomplete list of authorized optical sights for M16 rifles, M4 carbines and SPR's with the appropriate NSN's.The sight is designed for use with the M16/M4 family of rifles, but can be mounted on any weapon. It is also known as the M68 Aimpoint and is designed to meet United States military standards. Armed Forces in 2000, designated as the M68 Close Combat Optic (M68 CCO NSN: 1240-0). I have seen a few with the Aimpoing M68 CCO as well, too. They all seem to have the ACOG TA31F or TA31RCO-M16/M4 though. Most of the recent pictures of the M16 (and some M4's) deployed, have their rear sights removed. Recently I found myself looking up the M16A4 on google what I found was interesting.Serial: NSN Together with: an Ithaca M-49 Singl. Rifle is in VG+ condition with some use and contact marks. Sears Roebuck Ted Williams tube-fed semi auto rifle with a 21' bbl, mounted with a Walther Competition II Green Dot Optic in working condition.SIG SAUER firearms are the weapons of choice for many of the premier global military, law enforcement and commercial users.

Zeroing with M68 Sight Dear Half-Mast, We are being told that when you remove the M68 close combat optic sight from the M16-series rifle or M4/M4A1 carbine for storage, you must re-zero the weapon when the M68 is reinstalled. The CompM2 is a battery-powered, non-magnifying red dot type of reflex sight for firearms manufactured by Aimpoint AB.

Ted williams model 100 serial numbers