View Full Version : Spoke too soon - Alien sight mounting holes not threaded

11-08-2011, 03:16 PM
Picked up an overstock Alien X, label says built in Aug. of '09. Shooting in the string before sight and peep, about 100 shots, decided to finish it up. Sight screw would not start, a little dark in the shop so grabbed a light to see if there was dip, etc. Light on the subject - no threads cut in either hole. Smooth as a baby's ...

What is the proper size tap for those? Thanks

11-08-2011, 03:19 PM
10-24. I'll wait until tomorrow and call Martin before screwing something up. Shooting great, but not sure I want to stay instinctive.

11-08-2011, 04:39 PM
Remembered I had some taps to clean after dipping. Took some photos before, but was successful in threading both holes. Just can't believe it was missed at the factory.

11-09-2011, 11:13 AM
Fixed or not they should still be told about it.

Don B
11-09-2011, 11:43 AM
One of my Shadowcats was the same. When my son and I set it up for him to shoot, we had to tap the sight mounting holes.
No big deal, insert tap in cordless and tap away.

11-09-2011, 03:25 PM
I used a hand tap, a little light oil for paintball gun seals. I try to stay away from petroleum based lubes, just to decrease issues.

And I agree, ------ ------- must have been asleep at the wheel when he signed off on it. I plan to hunt with it tomorrow, rut kicking in, so would hate to have to send it in for something like that. I'll probably go instinctive tomorrow, peep didn't arrive today.

11-12-2011, 06:29 PM
wait what are these tap you speak of i never heard of

11-12-2011, 07:03 PM
a tool to clean out exsisting threads or cut new ones!

11-12-2011, 07:45 PM
oh thats cool i wish i had taps the other day when i needed them i would of taped it real good and hard and make nice new clean threads

11-13-2011, 03:13 AM
Here you go


11-13-2011, 08:50 AM
how much do they usually cost

11-13-2011, 09:12 AM
You can get a cheap Tap and Die set from harbor freight for $11.99 and up.


11-13-2011, 09:35 AM
how much do they usually cost

if your going to buy a tap and die set then i would buy a decent set.ya really dont want to go too cheap on something that with make threads.i would check out napa.

11-13-2011, 10:48 AM
Rather than buying a set, probably be easier to take it to a machine shop and have them do it. I have a Snap On set that I have only used a couple of times and I work on cars for a living. Cheap sets don't hold up and it's no fun trying to get a broken tap out of something your working on.