UltraMag® actions, barreled actions, and complete rifles are now available from Olympic Arms.

The BBK-01 model is a large super heavy double square bridge bolt action receiver suitable for "Safari" type cartridges from .338 Lapua to .505 Gibbs. With a Winchester® pre-64 style positive claw extractor and controlled round feed these are excellent choices for dangerous game rifles. Made from 4140 Chromemoly steel, these actions have a standard bolt face of .385", but can be opened up considerably larger to accomodate most bolt action cartridges.

Features:

Fully adjustable Timney® brand triggers.
Mag capacity of 6 rounds of .375 H&H; (larger cartridges obviously less)
Uncut double square bridge
Magazine length (floor plate style) of 3.85"
Barrel threads of 1.10"x12 TPI

For a complete BBK-01 size comparison chart, click HERE