Calguns.net  

Home My iTrader Join the NRA Donate to CGSSA Sponsors CGN Google Search
CA Semiauto Ban(AW)ID Flowchart CA Handgun Ban ID Flowchart CA Shotgun Ban ID Flowchart
Go Back   Calguns.net > FIREARMS DISCUSSIONS > Optics, Mounts, Rails and Sights
Register FAQ Members List Calendar Mark Forums Read

Optics, Mounts, Rails and Sights If it aims your firearm, post about it here.

Reply
 
Thread Tools Display Modes
  #1  
Old 09-23-2011, 9:32 PM
Onlyincali Onlyincali is offline
Senior Member
 
Join Date: Jun 2010
Posts: 624
iTrader: 10 / 100%
Default Scope mounting help?!?! Am I mounting my TR21 wrong?

Gun- AR15 with freefloat handguard. Optic-Trijicon TR21 1-4x. Mount-ADM RECON

With the mount on the furthest forward slot of the upper receiver, I see a tunnel inside my scope and if I move my head a tiny bit I loose part of the picture. If I pull my head back(uncomfortable) I can see a clear picture through the scope.

Is it ok to mount the scope half on the receiver and half on the free-float handguard? Or to mount the scope only on the handguard? Or do do I need a mount with a longer cantelever? Like the recon X mount?

Also, whats a "NORMAL" spot for the rear eye-piece of the scope to sit in reference to the back of the receiver? IE: how far forward is NORMAL for a 1-4x scope to sit?

Thanks for any advice!

Last edited by Onlyincali; 09-23-2011 at 9:34 PM..
Reply With Quote
  #2  
Old 09-23-2011, 9:46 PM
SuperSet SuperSet is offline
Vendor/Retailer
 
Join Date: Feb 2007
Location: OC/DC
Posts: 9,122
iTrader: 41 / 100%
Default

The TR21 has pretty long eye relief so you should look at the extended mount. Great optic.
Reply With Quote
  #3  
Old 09-23-2011, 11:18 PM
Droppin Deuces Droppin Deuces is offline
Calguns Addict
 
Join Date: Jan 2010
Location: Oceanside, Ca.
Posts: 5,818
iTrader: 10 / 100%
Default

4.8" to 3.4" eye relief. If you are setting it all the way forward in the mount and still having problems, then you need a mount with more forward throw. I have a 3-9x scope with about 4.5" of eye relief on its lowest setting. It's mounted about an inch forward of the rear of the rear of the receiver, and it almost too close with the stock fully extended.
Reply With Quote
  #4  
Old 09-24-2011, 12:10 AM
Onlyincali Onlyincali is offline
Senior Member
 
Join Date: Jun 2010
Posts: 624
iTrader: 10 / 100%
Default

I thank both of you. Looks like I need a longer mount.

Just to be sure....
The mount is ONLY supposed to go on the upper receiver...right? Never handguard?
Reply With Quote
  #5  
Old 09-24-2011, 1:10 AM
kemikalembalance's Avatar
kemikalembalance kemikalembalance is offline
Senior Member
 
Join Date: Jun 2011
Posts: 602
iTrader: 7 / 100%
Default

if you have a handguard that is mono. pic n a sec
__________________
,
and our leaders allow themselves to be spoon fed with foreign BS and have forgotten that the great majority of americans do not live in secluded gated comunities with private security 24/7 like they do, while the rest of us are subject to defending ourselves without Police escorts whenever we need it. they dont realize we are subject to different dangers than they are, and we must have and keep the right do defend ourselves!
Reply With Quote
  #6  
Old 09-24-2011, 1:17 AM
kemikalembalance's Avatar
kemikalembalance kemikalembalance is offline
Senior Member
 
Join Date: Jun 2011
Posts: 602
iTrader: 7 / 100%
Default

rail similar to this

and you will not regret buying from this company laruetactical.com
mounts:
__________________
,
and our leaders allow themselves to be spoon fed with foreign BS and have forgotten that the great majority of americans do not live in secluded gated comunities with private security 24/7 like they do, while the rest of us are subject to defending ourselves without Police escorts whenever we need it. they dont realize we are subject to different dangers than they are, and we must have and keep the right do defend ourselves!
Reply With Quote
  #7  
Old 09-24-2011, 6:41 AM
Droppin Deuces Droppin Deuces is offline
Calguns Addict
 
Join Date: Jan 2010
Location: Oceanside, Ca.
Posts: 5,818
iTrader: 10 / 100%
Default

If you have a TR21, that ^^^ mount won't throw it far enough forward. You'd need the"E" version.

http://www.laruetactical.com/larue-t...l-spr-e-lt-139
Reply With Quote
  #8  
Old 10-01-2011, 12:59 PM
Alex M Alex M is offline
Member
 
Join Date: May 2010
Posts: 143
iTrader: 3 / 100%
Default

Sorry to thread jack but, would I need the Larue SPR standard or extended mount for a Nightforce NXS 1-4x with my nose to the charging handle?
Reply With Quote
  #9  
Old 10-02-2011, 2:25 PM
Droppin Deuces Droppin Deuces is offline
Calguns Addict
 
Join Date: Jan 2010
Location: Oceanside, Ca.
Posts: 5,818
iTrader: 10 / 100%
Default

Quote:
Originally Posted by Alex M View Post
Sorry to thread jack but, would I need the Larue SPR standard or extended mount for a Nightforce NXS 1-4x with my nose to the charging handle?
Just go to their site and look a the eye relief of the scope. Then hold your rifle with your normal cheek weld. Estimate the distance from your eye to where the scope would need to be set and figure it out that way.
Reply With Quote
  #10  
Old 10-03-2011, 10:59 AM
Alex M Alex M is offline
Member
 
Join Date: May 2010
Posts: 143
iTrader: 3 / 100%
Default

Thanks for the help.
Reply With Quote
  #11  
Old 10-03-2011, 4:12 PM
LBDamned's Avatar
LBDamned LBDamned is offline
Made in the USA
CGN Contributor - Lifetime
 
Join Date: Feb 2011
Location: Free in AZ!!! yes, it's worth the Pain to make it happen!
Posts: 10,034
iTrader: 51 / 100%
Default

If I understand the question correctly, you are asking if it's okay to attach front of scope mount on hand-guard rail and rear scope mount on receiver rail... since you have FF tube handguard, the answer is yes.

Or you can get an optional mount with extended forward rail as has been discussed in thread...
Reply With Quote
  #12  
Old 10-04-2011, 2:42 PM
tomd1584's Avatar
tomd1584 tomd1584 is offline
Calguns Addict
 
Join Date: Sep 2008
Location: SFV
Posts: 5,854
iTrader: 51 / 100%
Default

Kemikalembalance: That is not a monolithic upper; it's an uninterrupted upper, but not monolithic. I'd avoid mounting the optic bridged from the upper/handguard. Even with as good as the Daniel Defense Lite rails are.

This is a true monolithic upper:




Last edited by tomd1584; 10-04-2011 at 2:44 PM..
Reply With Quote
  #13  
Old 10-04-2011, 4:15 PM
LBDamned's Avatar
LBDamned LBDamned is offline
Made in the USA
CGN Contributor - Lifetime
 
Join Date: Feb 2011
Location: Free in AZ!!! yes, it's worth the Pain to make it happen!
Posts: 10,034
iTrader: 51 / 100%
Default

^^^ what's wrong with mounting on a free float tube hand guard?
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -8. The time now is 10:10 PM.




Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Proudly hosted by GeoVario the Premier 2A host.
Calguns.net, the 'Calguns' name and all associated variants and logos are ® Trademark and © Copyright 2002-2016, Calguns.net an Incorporated Company All Rights Reserved.