Naphtali
03-09-19, 16:05
I'm attaching pictures of what appears to be a new defect in the bolt of my Colt LE6940, in the hopes that someone with more armorer knowledge than me can tell whether this needs replacing or can be safely ignored.
56328
56329
Relevant info is as follows:
-- The rifle has not been modified during its life (other than RDS etc. attached to the quad rail).
-- It was manufactured in 2013, purchased new by me and shot only by me since then.
-- The rifle has never had any issues or malfunctions during its life.
-- I clean it well every time I shoot it and keep it properly lubed (maybe somewhat over-lubed) with G96 lubricant prior to shooting.
-- The round count 2 weeks ago was 1,500. Ammo was exclusively decent quality 5.56 (e.g. Federal and IMI M855, Federal mk318).
-- I then did a carbine course this past weekend, at the conclusion of which I noticed this defect during cleaning and inspection.
-- The defect was 100% definitely NOT present when I lubed / inspected the bolt prior to the carbine course.
-- I shot 1,200 rounds at the course. I lightly cleaned / lubed everything at the 600 rd halfway mark but didn't inspect anything then. So the defect was NOT present at 1,500 rounds, and it WAS present at 2,700 rounds.
-- Ammo shot at the course was 1,000 rds IMI M855 and 200 rds Federal 5.56 Frangible (not .223).
-- I had no issues / malfunctions during the 1,200 rounds shot during the course.
-- At the conclusion of the course, I noted this copper-colored area during cleaning and inspection of the bolt.
-- Visibly you cannot see any 3D defect or outpouching on close inspection, but if you run your fingernail over the area, you can feel it is ever-so-slightly protruding out from the original bolt contour in the copper-colored area (i.e. it catches your fingernail there).
-- The copper color cannot be cleaned off - maybe I'm seeing the color of the original metal under the black finish, and the color change is due to the black finish now being missing there?
Any thoughts on what has happened, as well as recommendations, would be most appreciated!
56328
56329
Relevant info is as follows:
-- The rifle has not been modified during its life (other than RDS etc. attached to the quad rail).
-- It was manufactured in 2013, purchased new by me and shot only by me since then.
-- The rifle has never had any issues or malfunctions during its life.
-- I clean it well every time I shoot it and keep it properly lubed (maybe somewhat over-lubed) with G96 lubricant prior to shooting.
-- The round count 2 weeks ago was 1,500. Ammo was exclusively decent quality 5.56 (e.g. Federal and IMI M855, Federal mk318).
-- I then did a carbine course this past weekend, at the conclusion of which I noticed this defect during cleaning and inspection.
-- The defect was 100% definitely NOT present when I lubed / inspected the bolt prior to the carbine course.
-- I shot 1,200 rounds at the course. I lightly cleaned / lubed everything at the 600 rd halfway mark but didn't inspect anything then. So the defect was NOT present at 1,500 rounds, and it WAS present at 2,700 rounds.
-- Ammo shot at the course was 1,000 rds IMI M855 and 200 rds Federal 5.56 Frangible (not .223).
-- I had no issues / malfunctions during the 1,200 rounds shot during the course.
-- At the conclusion of the course, I noted this copper-colored area during cleaning and inspection of the bolt.
-- Visibly you cannot see any 3D defect or outpouching on close inspection, but if you run your fingernail over the area, you can feel it is ever-so-slightly protruding out from the original bolt contour in the copper-colored area (i.e. it catches your fingernail there).
-- The copper color cannot be cleaned off - maybe I'm seeing the color of the original metal under the black finish, and the color change is due to the black finish now being missing there?
Any thoughts on what has happened, as well as recommendations, would be most appreciated!