Vector Optics 30mm One-Piece Extended Picatinny AR Mount (V-18 / XASR-3031) — Neutral 0 MOA, Black Matte, Cantilevered Precision for AR-15/AR-10
The Vector Optics V-18 30mm One-Piece Extended Picatinny AR Mount is a rugged, cantilevered monoblock designed to place your LPVO or mid-power scope exactly where it belongs on flat-top AR receivers. A neutral 0 MOA base keeps your optic near mechanical center for common 50–200 m zeros, while the 38 mm (1.5") optical center height delivers a natural, heads-up shooting posture and comfortable cheek weld. Precision-machined from 6061-T6 aluminum and finished in a durable black matte anodizing, the V-18 provides a stable, repeatable interface with dual clamp nuts and four cap screws per ring to hold zero through recoil and hard use.
Key Features & Advantages
- Neutral 0 MOA base: Keeps your scope’s elevation close to mechanical center for predictable tracking and clean holds from 0 to mid-range distances.
- Cantilevered one-piece body: Pushes the optic forward for ideal eye relief with LPVOs (1–6× / 1–8×) and mid-range scopes (2–10× / 3–15×).
- AR-friendly height: 38 mm (1.5") bottom-to-center height clears common 24–50 mm objectives and supports heads-up target acquisition.
- Monoblock rigidity: One piece equals better alignment, stronger return-to-zero, and fewer failure points than two separate rings.
- Even clamping: Four cap screws per ring distribute pressure across your 30 mm tube to minimize marring and slippage.
- Secure rail interface: Dual clamp nuts with steel cross-bolts bite firmly onto MIL-STD-1913 Picatinny rails for repeatable mounting.
- Durable black matte finish: Low-glare, corrosion-resistant surface suitable for hunting, training, and competition.
Real-World Use Cases
General-Purpose LPVO Carbine
The V-18’s forward offset sets LPVO eyepieces where they run fastest for both-eyes-open work. The 0 MOA deck makes it simple to confirm a 50/200 m zero without eating up turret travel.
Hunting & Field Rifles
Stable, even ring pressure helps maintain zero across temperature swings and rough carry. The 1.5″ center height pairs well with helmets, caps, and ear-pro for a consistent cheek weld in the field.
Training & High Round Count
One-piece stiffness plus dual clamp nuts resist shift from barricade pressure and repeated recoil cycles, reducing variables during classes and practice.
Mechanical Strength & Protection
- Material: 6061-T6 aluminum alloy, full-CNC machined for stiffness and ring concentricity.
- Finish: Black matte anodizing for durability and reduced signature.
- Rail interface: MIL-STD-1913 Picatinny; extended footprint for secure clamping and alignment.
- Torque guidance: Ring cap screws ≤ 18 in-lb; clamp nuts typically 25 in-lb (acceptable up to 45 in-lb). Tighten evenly in an alternating pattern with a calibrated torque tool.
- Designed for hard use: Monoblock design maintains zero under recoil and positional loading.
Accessories in the Box
- Vector Optics V-18 / XASR-3031 30 mm One-Piece Extended AR Mount (Black)
- Hex/Torx key for ring caps and clamp nuts
- Retail packaging and quick-start leaflet
Technical Specifications
| Characteristic |
Specification |
| Ring Diameter |
30 mm |
| Built-in Cant |
0 MOA (neutral) |
| Overall Length |
139 mm / 5.5" |
| Mounting Length on Rail |
120 mm / 4.7" |
| Overall Height |
62 mm / 2.4" |
| Center Height (bottom to optical center) |
38 mm / 1.5" |
| Ring Width |
46 mm / 1.8" |
| Ring Length (cap contact) |
21 mm / 0.8" |
| Ring Gap (center-to-center) |
73 mm / 2.9" |
| Rail Standard |
MIL-STD-1913 Picatinny |
| Material |
6061-T6 aluminum alloy |
| Finish |
Black matte anodized |
| Hardware |
4 cap screws per ring; dual clamp nuts with cross-bolts |
| Weight |
155 g / 5.5 oz |
| Recommended Torque (ring caps) |
≤ 18 in-lb (≈ 2.0 N·m) |
| Recommended Torque (clamp nuts) |
~ 25 in-lb; acceptable up to 45 in-lb (≈ 2.8–5.1 N·m) |
Installation Notes (Best Practice)
- Degrease rail and hardware; seat the mount square on the Picatinny rail and snug both clamp nuts evenly before final torque.
- Level rifle and scope; tighten ring caps in an alternating “X” pattern to spec, maintaining even left/right gaps.
- Use minimal non-permanent thread treatment only if required. Follow your torque driver’s “dry” vs “wet” values.
- Add paint-pen witness marks on screws for fast visual checks during training or field use.
Summary
The Vector Optics V-18 30mm One-Piece Extended AR Mount is a dependable, black-anodized foundation for LPVOs and mid-power scopes on AR platforms. Its 0 MOA base, 1.5" center height, and cantilevered geometry deliver correct eye relief and consistent zero, while the one-piece 6061-T6 construction and dual clamp nuts keep everything locked down through recoil, training, and real-world use.
