CZ 527 .300 AAC Blackout SBR, 7.5 in Heavy-Contour Threaded Barrel, Composite Target Stock, Nikon Scope
This CZ 527 is a custom short-barreled rifle in .300 AAC Blackout with a 7.5-inch heavy-contour, threaded barrel and a composite target-style stock. It includes a mounted Nikon riflescope on an installed receiver rail and rings. The controlled-round-feed action with a large external claw extractor, matching serial numbers on the bolt and receiver, and the discontinued status of the 527 model line add notable appeal for buyers seeking a compact, configured bolt-action platform.
Condition
Overall Condition: Fair condition, showing extensive signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: The barrel was cut to a 7.5-inch SBR length. The rifle's action and barrel were spray painted, and most of that paint has been stripped. Scratches and blemishes are present on exterior surfaces. The bore is clean and shiny.
What's Included
- CZ 527 bolt-action rifle configured as an SBR
- Nikon riflescope (mounted)
- Scope rings and receiver rail/base (installed)
- 1x 5-round detachable steel box magazine
The 7.5-inch heavy-contour barrel delivers a compact SBR configuration in .300 AAC Blackout. The muzzle is threaded; the thread pitch is not marked, and no thread protector is shown. Capacity is 5+1 with the included detachable box magazine.
The composite target/benchrest-style stock is finished in textured dark gray and features a flat fore-end, high comb, and a vertical/target-style grip. It includes a rubber buttpad and a rear sling swivel stud (no front stud installed). Length of pull is 13.5 inches.
The steel receiver uses the CZ 527 lineage’s controlled-round-feed action with a large external claw extractor. A rear-mounted manual safety with a red fire indicator is present. The rifle has no iron sights.
Optics are ready to use with a receiver rail/base and rings installed, and a Nikon riflescope mounted and included in the sale. This setup provides a straightforward, field-ready sighting solution.
Made in the Czech Republic with import marking "WILLIAM ROGERS HOXIE, AR," this example has matching serial numbers on the bolt and receiver. The CZ 527 model line was discontinued in the early 2020s, underscoring the significance of configured rifles like this one.

