Marble Arms Rifle Adjustable Peep Long Bullseye Rear Sight Black

The Marble Arms Rifle Adjustable Peep Long Bullseye Rear Sight is a steel, dovetail-mounted peep sight built for shooters who want precision without batteries or complexity. If you're running a classic rifle or prefer iron sights over glass, this Bullseye design gives you the feedback you need to tighten your groups and refine your shooting form. The double-ring peep construction enforces proper sight alignment—the moment your rear sight drifts off center, your front sight follows suit, immediately flagging the misalignment to you. That feedback loop is what separates good shooting from sloppy shooting.

This is a traditional barrel-mounted rear sight that fits standard 3/8" dovetail slots found on many rifles. It pairs with bead-type or conventional blade front sights, making it a straightforward swap for factory-issue rear peeps. Whether you're zeroing at 50 yards or punching paper at 100, the adjustable design lets you dial in your hold without guesswork. Marble Arms has been making sights like this for generations—they understand that a quality peep is a permanent addition to your rifle, not a consumable.

This sight appeals to hunters who trust iron sights, competitive shooters refining their technique, and anyone building or restoring a rifle that demands reliable, non-electronic aiming. No batteries, no fragile lens coatings, no firmware updates. Just steel, proven geometry, and the discipline of proper alignment.

Key Features

• Double-ring peep design enforces consistent sight alignment and provides immediate feedback on rifle position
• Steel construction for durability and reliability in field use
• Adjustable for precise zeroing and point-of-aim correction
• Standard 3/8" dovetail mount compatible with many rifle platforms
• Works with bead and traditional blade-type front sights

Specifications

Frequently Asked Questions

Will this sight fit my rifle?

This sight uses a standard 3/8" dovetail mount and replaces factory rear sights on many rifles. Check your rifle's receiver or barrel for a 3/8" dovetail slot; if present, this sight should fit. Always verify compatibility with your specific model before purchase.

What front sight do I need with this rear peep?

The Marble Arms Bullseye sight pairs with bead-type front sights or traditional blade-style front sights. Your existing front sight may already be compatible; verify before buying.

Is this sight adjustable?

Yes, the sight is adjustable so you can zero it to your rifle and make corrections as needed.

How does the double-ring design help me shoot better?

The double-ring peep construction is engineered so that when your rear sight moves out of center, your front sight naturally drifts out of the center ring. This immediate visual feedback tells you the rifle is misaligned and helps you correct your technique and form before the shot breaks.