Archived Posts » 59,726,163
.300 aac with MI gen 2 ss
5/3/2012 7:10:37 PM
have a .300 blackout with an MI gen 2 ss FF 12in on it. I fired it and after 2-3 shots it vibrated off and hung off the barrel. I replaced it, tightened the screws and repeat 2 shots. Same issue. Tightened screws and loc-tited in place and marked screws to see if they were turning. Because of the tightening the prongs it uses to lock into barrel nut bent to about 35-45 degree angle. Fired again and it again vibrated off, screws had not turned. I just wanted to post this for users to be aware of this issue as it is a popular handguard. If anyone has this issue please let me know. As a side note it is NOT movable simply by hand from start to finish of install. It only comes loose AFTER firing.
EDIT: got into contact with Troy and was given the option for a refund and also advised to loctite handguard to barrel nut. They have excellent customer service I must say. Will try it and post later. Still curious if anyone with larger caliber rifles has the same issue and if anyone has any other ideas for a fix.
EDIT: got into contact with Troy and was given the option for a refund and also advised to loctite handguard to barrel nut. They have excellent customer service I must say. Will try it and post later. Still curious if anyone with larger caliber rifles has the same issue and if anyone has any other ideas for a fix.
5/3/2012 8:33:50 PM
i dont have any issues with my Gen 2 SS on my new 6.5 build. its a 15" guard on an 18" rail. Sorry to hear your trouble man!
5/3/2012 9:35:42 PM
Same as the above poster, I haven't had an issue.
And OP, I think you might be exaggerating a little bit about the 2-3 shots and having the tube fall off.
What do you have mounted on your rails that is so heavy its being jackhammered off your rifle in 3 shots??
Initially when I installed my tube I experienced a little slippage like what you describe, but absolutely nowhere near 3 shots and the tube fell off.
The best I can describe it as the tube moved forward a business card thickness every time the rifle fired.
After a 30 round magazine it was maybe 3/8" forward of its starting point.
I believe there is a video we made of the rail inching forward, and its my fault for not installing it tight enough.
I figure if I had installed the screws tighter the tube wouldn't have moved but I wanted to be sure it never moved again.
So I went home, loosened the screws, put a little loctite on the barrel nut, spread the clamping section of the tube open, reinstalled it and torqued the screws to 60 inch pounds. (probably too much...
)
I recently shot a 3gun match with the rifle, it had two contour cameras mounted on rail sections on the tube and it didn't move a smidge
And here are some pics to show off the sweet tube.
And OP, I think you might be exaggerating a little bit about the 2-3 shots and having the tube fall off.
What do you have mounted on your rails that is so heavy its being jackhammered off your rifle in 3 shots??
Initially when I installed my tube I experienced a little slippage like what you describe, but absolutely nowhere near 3 shots and the tube fell off.
The best I can describe it as the tube moved forward a business card thickness every time the rifle fired.
After a 30 round magazine it was maybe 3/8" forward of its starting point.
I believe there is a video we made of the rail inching forward, and its my fault for not installing it tight enough.
I figure if I had installed the screws tighter the tube wouldn't have moved but I wanted to be sure it never moved again.
So I went home, loosened the screws, put a little loctite on the barrel nut, spread the clamping section of the tube open, reinstalled it and torqued the screws to 60 inch pounds. (probably too much...
)
I recently shot a 3gun match with the rifle, it had two contour cameras mounted on rail sections on the tube and it didn't move a smidge
And here are some pics to show off the sweet tube.
5/3/2012 10:01:52 PM
That is odd but Troy will take care of ya if needed. I have the TRX which is very similar and love it. If you do decide to go with loctite, be sure it is blue.
5/3/2012 10:03:58 PM
I had this rail on a .300 Black Out with no problems.
Then I put it on this rifle pictured and have put a few bullets through that too.
All together I would wager I have put more rds through a single MI gen II SS than 99.99% of the people on this site.
With that said mine has not slipped. I did tighten it very snug and used loctite though.
I also saw WI57s slip forward a touch when we were shooting off of a lead sled but that was 1st install and after around 200rds off the bench. After he put his purse down and tightened it up accordingly like he said no issues.
Hope this helps. I can't say enough good things about Midwest and the staff down there. Good people IMO!!!
Then I put it on this rifle pictured and have put a few bullets through that too.
All together I would wager I have put more rds through a single MI gen II SS than 99.99% of the people on this site.
With that said mine has not slipped. I did tighten it very snug and used loctite though.
I also saw WI57s slip forward a touch when we were shooting off of a lead sled but that was 1st install and after around 200rds off the bench. After he put his purse down and tightened it up accordingly like he said no issues.
Hope this helps. I can't say enough good things about Midwest and the staff down there. Good people IMO!!!
5/4/2012 9:34:04 AM
I had the same problem the first time I shot mine. The tube moved about 1/2 the way down the barrel nut in 20 rounds. I made sure every thing was degreased and loc-tited the clamp screws and torqued them to 55-60 in/lbs. I have another 80 some rounds through it with no problems.
5/4/2012 4:33:31 PM
Thanks for the info guys. In response to above, the only things mounted were a magpul AFG at the far end, a magpul buis and an O-light with mount. Total weight was very light and this was bench rest shooting so the rail was on sandbags at the time as I was sighting in an aimpoint. MI was very fast with their customer service and a new unit is on the way so I will reinstall with copious loc-tite. I was going to switch it to a DD modular 12.0 but after MI's customer service I will give it another go.
