Rifle Scopes Flat top receiver & A2 stock ring height?

fusiachi

PFC Snuffy
Full Member
Minuteman
May 12, 2008
200
35
South of Expected
Other than what's required to keep the objective clear of the rail, are there any other considerations I should be aware of when determining the proper ring height for a DPMS LR-308 with a flat top & A2 stock?
 

SPDGG

Sergeant
Full Member
Minuteman
Nov 30, 2005
252
0
TX, USA
www.rdprecision.net

fusiachi

PFC Snuffy
Full Member
Minuteman
May 12, 2008
200
35
South of Expected
Re: Flat top receiver & A2 stock ring height?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SPDGG</div><div class="ubbcode-body">IMHO / Solution:

LaRue Tactical SPR / M4 Scope Mount
</div></div>

Thanks for that. The LaRue mount was actually what made me wonder if the height requirement for rings on a gas gun was different than that for a bolt gun-1.5" seems pretty high if we're measuring from rail top to the center of the scope bore. That dimension on the Seekins rings on my Remington is .82" for example.
 

SPDGG

Sergeant
Full Member
Minuteman
Nov 30, 2005
252
0
TX, USA
www.rdprecision.net
Re: Flat top receiver & A2 stock ring height?

You have a higher comb height compared to a bolt gun on a ar platform. Your head is planted higher on an AR platform. Anything under 1.0" on a bolt gun also puts in consideration of a scope base. Add Scope Ring Height and Base Height.

If you use a riser on a flattop AR, exp. Badger Ordnance 22MOA, you would need "medium" scope rings to bring the scope to the proper height. Add Scope Ring Height and Base Height. I know some prefer higher and some lower.

If you used bolt gun height rings on a AR with a larger than tube diameter objective. Your scope would not clear the hand guard.

Hope this makes some sense. Basically, You need anywhere from 1.25" to 1.50" mount/ring+base combo on a flatop AR platform. The LaRue Tactical SPR line & US Optics line of mounts provide all the above in one unit.

Have a great one,
FTK

 

427Cobra

Lt. Colonel
Full Member
Minuteman
  • Nov 24, 2005
    5,872
    261
    Sanger, TEXAS!
    Re: Flat top receiver & A2 stock ring height?

    Your gonna need about 1.4 inches above the upper receiver rail because of the straight comb of the weapon, IMHO the Armalite 1 piece mount is the best bang for the buck, its made well and priced right, and with the right scope it will make it to 1k.
     

    fusiachi

    PFC Snuffy
    Full Member
    Minuteman
    May 12, 2008
    200
    35
    South of Expected
    Re: Flat top receiver & A2 stock ring height?

    Thanks guys, that was exactly the information that I was looking for.
     

    Crashnrondo

    Sergeant
    Full Member
    Minuteman
    Dec 15, 2003
    209
    1
    Neenah, Wisconsin
    Re: Flat top receiver & A2 stock ring height?

    If your upper receiver is a slick side those have a raised rail on them already, so you will only need 1" tall rings (measured from the rail to the center of the ring)
    Ron
     

    fusiachi

    PFC Snuffy
    Full Member
    Minuteman
    May 12, 2008
    200
    35
    South of Expected
    Re: Flat top receiver & A2 stock ring height?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Crashnrondo</div><div class="ubbcode-body">If your upper receiver is a slick side those have a raised rail on them already, so you will only need 1" tall rings (measured from the rail to the center of the ring)
    Ron </div></div>

    It's not a raised rail, so it looks like 1.5" is the way to go.

    So when are the Pack going to get that dipshit Raji into camp? It's gotta be tough to install a 3-4 without the middle guy there.