Pete's Pillars CZ 455 / CZ 457 Slim Smooth Grooved Bolt Knob – PP4SG
The Pete's Pillars PP4SG is a slim-profile replacement bolt knob for the CZ 455 and CZ 457, CNC machined from billet aluminum with a clean black finish.
Its smooth body and machined groove pattern provide a larger, easier-to-find gripping surface than the compact factory knob while keeping the profile streamlined and lightweight.
For CZ rimfire shooters who want improved bolt manipulation without installing an oversized tactical-style knob, the PP4SG offers a practical middle ground.
Build Out Your CZ 457
Designed for CZ 455 & CZ 457 Rifles
The PP4SG is designed specifically as a replacement bolt knob for compatible CZ 455 and CZ 457 rimfire rifles.
The factory knob is compact and functional, but shooters using larger optics, shooting quickly from positional stages, or simply wanting a more substantial bolt-control surface may prefer a larger aftermarket knob.
The PP4SG improves the gripping surface while retaining a slim profile that does not feel unnecessarily bulky on a rimfire rifle.
Slim Profile without the Oversized Feel
Not every CZ 457 needs a large competition-style bolt knob.
The PP4SG was designed around a slimmer, more streamlined profile that provides additional leverage and a more positive contact surface while remaining proportional to the CZ rimfire action.
This makes it a natural choice for hunting rifles, bench rifles, precision rimfire builds, and competition setups where the shooter wants better bolt access without a large protruding knob.
Smooth Grooved Design
The PP4SG uses a smooth exterior with machined grooves rather than aggressive knurling.
The grooves break up the surface and provide tactile reference while maintaining a clean feel in the hand.
Shooters who prefer more aggressive texture can instead choose one of our knurled CZ 455 / 457 bolt knob designs.
CNC-Machined Billet Aluminum
The PP4SG is CNC machined from billet aluminum for a lightweight, precise replacement for the factory bolt knob.
Aluminum keeps unnecessary mass off the bolt handle while allowing the knob to use a larger, more ergonomic shape than the original compact factory component.
The black finish gives the knob a clean appearance that pairs naturally with factory CZ hardware, black chassis systems, traditional stocks, and custom precision builds.
Better Bolt Manipulation
A larger bolt knob provides more surface area for the hand during bolt operation.
That can make the bolt easier to locate and manipulate from the shoulder, particularly when shooting quickly or working around a large scope and ring setup.
The benefit is simple: the shooter has a more substantial contact point when lifting, cycling, and closing the bolt.
Useful for Precision Rimfire & NRL22 Builds
The PP4SG works particularly well on CZ 457 rifles used for precision rimfire, NRL22-style shooting, positional practice, and recreational competition.
During positional stages, the shooter may cycle the bolt without completely breaking position behind the rifle. A larger, easier-to-find bolt knob can make that manipulation more natural.
Its slim shape also keeps the rifle from feeling overbuilt when compared with much larger tactical-style bolt knobs.
Equally at Home on a Sporting Rifle
The PP4SG is not limited to competition rifles.
Its restrained shape makes it a good upgrade for CZ 455 and CZ 457 hunting, varmint, and general-purpose rimfire rifles where an oversized knob might look or feel out of place.
The result is a functional upgrade that still matches the proportions of the rifle.
Choose the Pete's Pillars Bolt Knob that Fits Your Style
Pete's Pillars offers several CZ 455 / 457 bolt knob patterns so shooters can choose the combination of profile and texture they prefer.
- PP4SG: Slim Smooth Grooved
- PP4KG: Slim Knurled Grooved
- PP4HK: Slim Helix Knurled
- PP4TK: Slim Spiral Knurled
- PP4TS: Slim Spiral Smooth
The PP4SG is the choice for shooters who want the grooved profile with a smoother, less aggressive gripping surface.
Part of the Pete's Pillars CZ 457 System
The bolt knob is a small upgrade, but it fits into a much larger CZ 457 parts ecosystem.
Pete's Pillars develops and stocks CZ 457 bolt components, firing pins, cocking indicators, springs, rails, bedding products, chassis accessories, and other components for shooters building everything from lightweight sporting rifles to dedicated precision-rimfire systems.
Product Details
- Brand: Pete's Pillars
- Part Number: PP4SG
- Product: Replacement Bolt Knob
- Compatibility: CZ 455 / CZ 457
- Profile: Slim
- Surface Style: Smooth Grooved
- Material: Billet Aluminum
- Color: Black
- Use: Hunting, Target Shooting, Precision Rimfire and Competition
Verify your rifle's existing bolt knob is removable before installation. Rifle and other accessories shown or referenced are not included.
Designed and manufactured by Pete's Pillars.
