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-   -   Does threaded barrel cap tend to fall off while shooting? (http://www.firearmstalk.com/forums/f172/does-threaded-barrel-cap-tend-fall-off-while-shooting-95628/)

JoeLopez24 08-17-2013 10:39 PM

Does threaded barrel cap tend to fall off while shooting?
 
Hey guys, and ladies maybe...

Got a new sig p226 with threaded barrel and night sights. Haven't shot it yet but am worried about the barrel cap...

I notice when I decock it several times, the cap tends to loosen no matter how hard I tighten it. Are threaded barrel caps none to fall off and go missing often? Would I be smart to just invest in a regular barrel? Any input on this topic would be useful.

Thanks!

sdiver35 08-18-2013 02:58 AM

You need an rubber o-ring in it to keep pressure on it. I bought mine at Lowe's and have about 20 extras to replace as they wear.

JonM 08-18-2013 03:00 AM

you need an o-ring that is designed to withstand high temperatures.

keyspike 08-25-2013 06:43 AM

Mine almost fell off constantly. When it gets loose, the accuracy goes down the toilet. I finally loctited it (blue). Now it's a pain in the ass to clean unless I use a bore snake because it doesn't come out of the slide without unscrewing it. If I take it off, I'll have the same problem again. Mine never came with any O-Ring.

Gatoragn 08-25-2013 01:00 PM

Quote:

Originally Posted by keyspike (Post 1346157)
Mine almost fell off constantly. When it gets loose, the accuracy goes down the toilet. I finally loctited it (blue). Now it's a pain in the ass to clean unless I use a bore snake because it doesn't come out of the slide without unscrewing it. If I take it off, I'll have the same problem again. Mine never came with any O-Ring.

I think folks are adding the O-ring aftermarket.

ctshooter 08-25-2013 01:11 PM

1 Attachment(s)
My ruger 22/45 has a wave washer. The washer is basically a spring that pushes against the cap and by doing that "locks" the threads.

kodiak 08-29-2013 06:27 AM

1 Attachment(s)
Look at these threaded barrels. They are all factory with the exception of the bull barreled .22LR.

The Sig barrel (just like the Glock) do not have threads that extend to the crown. AAC makes a thread protector with an o-ring embedded to the inside. The o-ring secures around the non threaded portion at the tip of the barrel. It's a lot better than compressing an o-ring between the barrel and thread protector (see pic M&P barrel).


http://www.advanced-armament.com/M135-x-1LH-Thread-Protector_p_480.html


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