Les Baer BCG wear markings on inner area behind firing pin?

[Rbenson19]

Hey guys.......just got my beautiful build back from matt huston in Stockton ca and went to shoot my stud of a build...........ill name it off.......Daniel defense 14.5 barrel CHF HP MP Chrome lined......JP compensator.....Vltor Vis-2 monolithic upper ( 10 or 9 inch mid gas port quad rail) ..........BCM ambi charging handle......and of course the LES BAER BCG for my upper........the lower is a hogan billet lower w/ a S3G Geisselle trigger and ACS Magpul stock with spikes tactical heavy buffer!!! OK.....now my question is this: just fired gun for first time and it seems to perfect for its own good....it's dead accurate, smooth as butter and cycles perfect!!!!.......... But after cleaning the new gun the INNER part of my LBC BCG was worn with lined markings that are somewhat swirled........almost like a 1/3 twist or something....lol......but really there are markings and wear behind the firing pin and all over the inner space of the BCG ( all space in the center of the tubular BCG) ......should I worry? What's it from? Only 100 rounds and a lot of wear? Does anybody else know what's going on? Any help would be greatly appreciated!

[THT]

Pictures would be very helpful but in general, yes, it is common for areas of a bolt and carrier to wear with use.

[Rbenson19]

Pic now available above

[Rbenson19]

Also, the BCG is les Baer NM Chrome!

[THT]

Normal mill marks, nothing to be concerned about.

[TheDigitalPicasso]

Why so many .................................................. .................................................. ..................?

[Troutbum13]

Yeah???????? Come on guys.....this is his twin brother and it was his first time shooting......I know my DD bcg didn't have any marks inside the bcg???? Of course it's a custom les Baer bcg national match chrome.....$350 from brownells...............why the marks people?

[Troutbum13]

His bcg is the the national match les Baer custom ......not mine to clarify

[THT]

Yeah???????? Come on guys.....this is his twin brother and it was his first time shooting......I know my DD bcg didn't have any marks inside the bcg???? Of course it's a custom les Baer bcg national match chrome.....$350 from brownells...............why the marks people?

Your DD BCG is parkerized which doesn't highlight machining marks the way chrome and nickel boron coatings do.

[crazychinaman]

don't worry about it .That is normal.Just shoot it.

[Troutbum13]

That was my bro writing through my page to try and get answers..........but thanks 4 the info

[THT]

I was doing some maintenance to demo/training guns and pulled the bolt from one of the suppressed SBRs. With parkerized/phosphated parts, the surface will wear and this is a taste of what's to come. These parts have about 8K rounds on them at this time.




The finish on the face of the bolt as well as lugs is completely gone.





I forgot to snap pics of the carrier but the bearing surfaces are completely worn down with 0 parkerizing left. Still runs like a champ though.

[-hanko]

Yeah???????? Come on guys.....this is his twin brother and it was his first time shooting......I know my DD bcg didn't have any marks inside the bcg???? Of course it's a custom les Baer bcg national match chrome.....$350 from brownells...............why the marks people?

That only happens on weapons that are "a stud of a build".

rotf, etc.

[Merc1138]

Yeah???????? Come on guys.....this is his twin brother and it was his first time shooting......I know my DD bcg didn't have any marks inside the bcg???? Of course it's a custom les Baer bcg national match chrome.....$350 from brownells...............why the marks people?

Because it's not chrome plated for the sake of "bling" like a car bumper. If it doesn't affect the function, it doesn't matter. This isn't even an exterior part that people normally complain about looks, it's an interior portion of an interior component.

[Rbenson19]

I understand.....but my picture is weak......the lines look to be carved out by tool or something......it can run oil through it like a river......the carvings are just deep is all.........I understand there will be wear.....especially on chrome or NB BCG's............I was only asking about what is making the swirl like tool carvings on the inner part only ( all other areas look new) ?? Thanks for sarcasm though boys...wouldn't be calguns without it.....Hanko