Accuracy at any distance.
Long-range shooters often encounter a common problem: Certain scopes do not offer enough internal elevation for the rifle to achieve maximum range. Barrett ExRings with Pin-Lock® Technology make this issue a thing of the past.
With dual MOA settings, ExRings allow maximum use of the riflescope's precise internal elevation adjustment by aligning the scope for long-range shooting. The front ring has a precision-fit pivot feature that allows the rear of the scope to be elevated at the rear ring with no chance of unwanted movement. The rear ring houses Barrett Pin-Lock Technology that offers two elevation settings by simply changing the location of a single pin.
Once an elevation setting is selected and the ring's cross bolts are torqued to specification, Barrett ExRings become a rock-solid mount with the perfect MOA elevation for your particular long-range rifle setup. Barrett rings are made from high-strength 7075 T6 aluminum for long-term durability.
Last, but not least, ExRings also incorporate Barrett ZERO-GAP® Technology to give you 360 degrees of heavy-duty holding power under even the harshest recoil. ExRings work on flat and tapered M1913 optics rails with riflescopes having up to a 70 mm objective lens. Adjustable between 15 and 40 MOA or 20 and 30 MOA taper and available in 30 and 34 mm, ExRings offer solutions to your scope mounting limitations.
Size: 30 mm, 34 mm
Base Type: Mil-STD 1913 Rail
Tensile Strength: 83 ksi
Ring Width: 1.2" (3.05 cm)
Material: 7075 T-6 Aluminum
Finish: Hard Anodized Black
Height: (Contact Point to Scope Ring Center) 1.0" - 1.7"
Barrett ExRings with Pin-Lock™ technology has a dual setting MOA taper at 15 MOA or 40 MOA, utilizing the riflescope’s precise internal elevation adjustment by aligning the scope for long-range shooting. The front ring assembly is designed with a precision fit pivot that allows the scope to elevate in the rear, but tolerances ensure no unwanted movement. The rear ring assembly houses the Barrett Pin-Lock technology that allows the user to select from two MOA settings. Once an MOA setting is selected and the ring’s four cross bolts are torqued to specification, Barrett ExRings become a rock-solid mount with the correct taper to maximize the potential of your rifle system.
- ZERO-GAP® offers wider clamping area and maximizes “scope grip”
- Fits M1913 rails
- Zero-backlash tongue and groove interface
- High-strength aircraft-grade 7075 T-6 aluminum construction
- 2.5 times lighter than steel
- Heat-treated steel cross bolt and captured nut for increased strength
- Hard anodized with a 60HRC (Rockwell C scale)
- BORS® compatible
Materials and Mass
When selecting a mounting solution for your optics, strength and weight are two important considerations. The greater the overall weight of your complete optics system, the greater inertia (the tendency of a body to resist acceleration) it will have. When a gun is fired, it recoils with instant acceleration. A heavy optics system mounted above the bore axis will resist the sudden rearward movement. A light-weight, strong mount is the best way to combat unwanted sight movement during recoil.
Barrett ExRings are constructed of high-strength 7075 T-6 aluminum. This material is ideal for the application due to its impressive strength; even more impressive strength-to-weight ratio when compared to heavier steels.
|Barrett 7075 Aluminum||Others 1018 Steel||Results|
|Tensile Strength||83 ksi||64 ksi||25% stronger|
|Tensile Strength Yield||73 ksi||54 ksi||25% Stronger|
|Weight||8.32 oz||11.5 oz||25% Lighter|
Barrett ExRings are wider than typical rings at 1.2 inches. This creates a greater surface area of contact between the ring and scope maintube. The benefit is a secure grip on the optic that will hold up under heavy recoil. Along with this solid connection comes protection for your expensive scope. The broad clamping area spreads out the forces and reduces the likelihood of denting or distorting the scope tube. The same benefits in scope holding translate directly to the mount’s ability to hold on the rail. More width in rail clamping area is better.
|Surface Gripping Area||8.192 inch²||4.08 inch²||Twice the effective Gripping Area|
|Width of Ring||1.2 inch||.625 inch||Twice the effective Gripping Area|
Heavy Duty Hardware
The rail clamping cross bolt and nut are precision machined from hardened steel alloys. The cross bolt is securely pressed into the scope ring base, and the end of the bolt is staked to retain the nut. The cross bolt is designed with a broad shoulder to perfectly interface with cross slots of mil spec 1913 rail to resist even the harshest recoil. The top cap of each ring is retained by four robust Torx screws placed with broad spacing to provide consistent and evenly distributed clamping force.
Precision and Tolerance
All critical features on Barrett ExRings are machined with great care. The 30-mm bore will be exactly that with a diameter tolerance of plus or minus .001", perfect roundness and position in relation to the mounting rail. Angles and surfaces in the rail clamping feature of the lower ring are held to great positional tolerances to ensure the scope is held centered when bolted up to the rail.
Fit and Finish
Every component of Barrett ExRings is carefully handled all the way to packaging. All edges are beautifully rounded to prevent snags and resist corner wear. The 7075 T-6 components are hard anodize coated in black to mil spec MIL-A-8625 Type III Class 2 specification for superior surface hardness (60 Rockwell) and resistance to wear. Steel components are manganese phosphate coated to mil spec DOD-P-16232 Type M Class 2 specification.
The unique scope clamping design of the ZERO-GAP feature takes care of some old optics mounting challenges. In the past, great attention was required when securing scope ring caps to maintain an equal gap between the lower ring and top cap on each side. There was also the possibility of rotating the scope out of perfect vertical reticle alignment while torquing the cap screws in a side-to-side pattern. These problems are eliminated with the ZERO-GAP design. Simply secure the cap on the indicated side until there is no gap between lower ring and cap, check for perfect reticle alignment, and then torque the remaining side to the required specification.
|13319||30mm 15/40 MOA (1.6" Dual MOA Setting)||816715010094|
|13320||30mm 20/30 MOA (1.6" Dual MOA Setting)||816715010445|
|66870||34mm 20/30 MOA (1.7" Dual MOA Setting)||816715010438|
|66821||30mm Accessory Ring Cap||816715010650|
|13325||1" Scope Ring Adapters||816715010162|