BT19: Atlas® Accuracy International Spigot
The BT19 mounts an Atlas bipod to the Accuracy International spigot interface, so AI and AICS-pattern rifles get a rigid, purpose-built Atlas mount instead of a generic adapter that almost fits. It indexes to the rifle's native interface to preserve the consistency AI rifles are known for. Machined in the USA and backed by a lifetime warranty.
Built to a Standard
Key Features
It mates an Atlas to the AI spigot. Rather than clamping to a separate rail, the BT19 locks the bipod to the Accuracy International spigot interface that AI and AICS rifles use.
Mounts an Atlas to the AI spigot interface
Indexes to the rifle's native mounting point for rigidity
Pairs with an Accu-Shot monopod for a full AI platform
Knowledge Is Power
Frequently Asked Questions
Still weighing whether the BT19 Atlas AI Spigot is right for your rifle? These quick answers tackle what we get asked most: how the options compare, what fits your rifle, and where it is made.
How do I mount an Atlas on an Accuracy International rifle?
Use the BT19 Atlas Accuracy International spigot, which mates the Atlas to the AI spigot interface. If your AICS-pattern chassis needs a rail instead, use the BT20 AAIS rail set.
What is an AI spigot?
The AI spigot is the native bipod-mounting interface on Accuracy International rifles. The BT19 locks an Atlas to that spigot, so no separate Picatinny rail is needed.
BT19 or BT20: which do I need?
Use the BT19 spigot if your rifle mounts via the AI spigot directly. Use the BT20 AAIS rail set if your AICS-pattern chassis needs a rail added for the Atlas to clamp to.
Will it fit my AICS chassis?
It fits the Accuracy International spigot interface. AICS-pattern chassis vary, so confirm your specific interface or ask our team before ordering.
Is the BT19 made in the USA?
Yes. The BT19 is machined in the USA by B&T Industries and backed by a lifetime warranty, the same as the rest of the Atlas line.