1911 question

[JCSC]

Can someone educate me on what these are called and what is the actual purpose of these raised rings?

I am applying cerakote to my 1911 and was curious, since I see corresponding ridges in the frame.

 

[Tallball]

If you mean on the barrel, those lock into the slide to temporarily lock the breech until the slide starts to recoil.

 

[chicharrones]

 

[S.Crockett]

You mean the locking lugs?

 

[JCSC]

That video was perfect chicharrones! That is a must see for anyone new to the 1911 platform.

I’m all set now!

 

[243winxb]

Called locking lugs. They lock into the slide. The barrel link controls the amount of lock up engagement.

Coating the barrel & slide contact points may change point of bullet impact.

 

[Slamfire]

Called locking lugs. They lock into the slide. The barrel link controls the amount of lock up engagement.

Coating the barrel & slide contact points may change point of bullet impact.

Not sure if by coating, you mean lubricating. I do grease the locking lugs, slide rails, etc, etc.

this was the old latest and greatest




this is the new latest and greatest



And I am quite sure there is a point of impact change at 50 yards, can't recall seeing one at 25 yards, with the first shot downrange. Might be due to the barrel fouling, or the grease. Clean and oiled barrels do shoot to a different point of impact, I have seen this particularly with 22 lr barrels and high mileage rifle barrels. This is not something to be worried about at 7 yards, 10 yards. I am of the opinion it is important to lubricate the swinging link cam under the barrel, the lugs on top, and the barrel outside. Then rack the slide several times to spread the lubricant around. I know 2700 Bullseye shooters who put a drop of oil every ten shots on the end of the muzzle, where the barrel bushing rubs the end of the barrel. I have seen on my target 1911's, finish wear at that location, so lubrication has to be a good thing.

 

[Jim Watson]

I am applying cerakote

Not sure if by coating, you mean lubricating.

No, he means painting.

 

[243winxb]

cerakote

Google- can be up to .003" thick.

May be an issue with bullets POI?

 

[JCSC]

Google- can be up to .003" thick.

May be an issue with bullets POI?

That was my thought. I’m going to mask these areas.

 

[Hikingman]

The locking lugs are checked for fit with the existing barrel or a barrel swap.That is acceptable engagement vs. not enough considering height and the corresponding vertical engagement, and/ or other considerations.

 

[1KPerDay]

I wouldn’t cerakote the lugs or recesses.

 

[JTQ]

Regardless of the fit, cerakote isn't going to last very long on the lugs or the barrel hood.

 

[Riomouse911]

Regardless of the fit, cerakote isn't going to last very long on the lugs or the barrel hood.

Yup. It will wear off pretty quickly.

Stay safe.

 

[GunnyUSMC]

Do not coat the barrel or the inside of the slide. This will avoid fitting problems plus, no one will see it.
Just lay a strip of masking tape on the inside of the slide.
Here’s an Sig P250 that I coated the slide, for a friend.

 

[Dave DeLaurant]

Expanding on the cool vid chicharrones linked above, Ian at Forgotten Weapons did a series of video shorts explaining various firearm operating systems:



JM Browning patented the most commonly encountered systems (along with some weirder ones) used in autopistols; the 1911 pistol uses the most common system, known as short recoil

 

[halfmoonclip]

If you're really determined to apply something inside the slide, consider hardchrome. It is thin enough to not affect fit. And it's durable enough to not wear off.
Moon
ETA- The locking lugs are gone on most modern designs; now the barrel hood is used to lock the barrel and slide.
M

 

[9mmepiphany]

If you're really determined to apply something inside the slide, consider hardchrome. It is thin enough to not affect fit. And it's durable enough to not wear off.

Might you be thinking of Electroless Nickel?

HC is pretty thick when applied. For the internals of pistol EN is usually preferred as it is much thinner

 

[Howland937]

I've had a few pistols cerakoted...holds up well, just don't coat the insides. There's no reason to.

 

[S.Crockett]

Bling, bling …

Cimmeron nickel, a special flavor:

 

[JCSC]

I masked the lugs and recesses off. It’s good to go. I did one in bright nickel and had to redo one that was pink.

 

[JCSC]

Do not coat the barrel or the inside of the slide. This will avoid fitting problems plus, no one will see it.
Just lay a strip of masking tape on the inside of the slide.
Here’s an Sig P250 that I coated the slide, for a friend.
View attachment 1155705 View attachment 1155706 View attachment 1155707 View attachment 1155708

How is this for obnoxious.