The Primary Arms SLx 30mm Cantilever Scope Mount 1.5 in Height, Black is a one-piece aluminum cantilever mount that fixes a 30 mm tube rifle scope to an M1913 Picatinny rail at a 1.5 in (38 mm) optical centerline, using secure multi-bolt clamping and a black anodized finish.
The SLx line exists to give the mounting function of the premium PLx mounts at a price that suits the scope most people are actually fitting. You get the same essentials — a rigid one-piece body, a forward cantilever that sets correct eye relief on an AR-pattern rifle, and multi-bolt clamping onto Picatinny — without the 7075 alloy and steel hardware specification of the PLx range.
How It Compares
This is the value 30 mm mount at standard height. For 34 mm tube scopes such as the SLx 1-10x28, use the Primary Arms SLx 34 mm cantilever mount. For a stronger specification in 7075 aluminum with grade 12.9 steel hardware and over 6,500 lb of clamping force, step up to the Primary Arms PLx 30 mm cantilever mount at 1.5 in height, or the PLx 30 mm cantilever mount at 2.04 in height for a heads-up position. This mount fits the 30 mm tube of the SLx 1-6x24 Gen IV with the ACSS Nova reticle and the PLxC 1-8x24 SFP with the ACSS Nova reticle. Browse all rifle scope mounts.
Ideal For
- AR-platform rifles needing forward eye relief from a receiver rail
- Practical and competition rifle builds on a sensible budget
- First-time LPVO mounting, where the mount should not cost as much as the scope
- Any 30 mm tube rifle scope on an M1913 Picatinny rail
Key Features
- Ring size: 30 mm, for scopes with a 30 mm main tube
- Height: 1.5 in (38 mm) optical centerline, the conventional height for a normal cheek weld
- Construction: One-piece aluminum body
- Retention: Secure multi-bolt clamping onto the rail
- Cantilever: Sets correct eye relief on AR-pattern rifles where the receiver rail ends too far back
- Rail: M1913 Picatinny
- Finish: Black anodized
What's Included
- Primary Arms SLx 30 mm cantilever scope mount, 1.5 in height
Technical Specifications
Product Type | One-piece cantilever rifle scope mount |
Ring Diameter | 30 mm |
Height | 1.5 in (38 mm) optical centerline |
Rail | M1913 Picatinny |
Material | Aluminum |
Retention | Secure multi-bolt clamping |
Finish | Black anodized |
Series | Primary Arms SLx |
US Shipping & Support
Shipped from D&R Sports Center in the USA with fast, tracked delivery. Questions on fit, mounting or which model suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What size scope tube does the Primary Arms SLx 30mm cantilever mount fit?
This mount has 30 mm rings, so it fits rifle scopes with a 30 mm main tube. A scope with a 34 mm tube needs the Primary Arms SLx 34 mm cantilever mount instead.
What rail does this mount attach to?
The Primary Arms SLx 30 mm cantilever mount attaches to an M1913 Picatinny rail using secure multi-bolt clamping.
What does 1.5 in height mean on a scope mount?
The 1.5 in figure is the optical centerline height, measured from the top of the Picatinny rail to the center of the scope tube, which is the conventional height and gives a normal cheek weld on most AR-pattern rifles.
Why choose a cantilever mount rather than separate rings?
A cantilever mount extends the rings forward of the rail section it clamps to, which is necessary on AR-pattern rifles to set correct eye relief, and its one-piece body keeps the two rings in alignment so the scope tube is not stressed.
How does the SLx mount differ from the PLx mount?
The SLx mount provides the same one-piece cantilever function at a lower price, while the PLx mount is built from 7075 aluminum with grade 12.9 steel hardware, three-bolt rings, dual recoil lugs and over 6,500 pounds of clamping force.
