Kynshot R15015098 Spacer Weight S/S Ar-Platform

The Kynshot R15015098 Spacer Weight for AR-platform rifles is a stainless steel buffer system upgrade designed to improve how your gun cycles and handles recoil. Built in collaboration with Blitzkrieg Components, this spacer weight drops into both PCC and AR hydraulic buffer setups to add mass forward of the buffer itself—a simple tuning step that can make a real difference in how your rifle runs, especially in shorter-barreled builds where bolt control and reliability matter most.

The spacer adds 2.5 ounces of weight and extends your buffer system by 0.75 inches, which helps keep the buffer stable and prevents tilting during the cycle. If you're building or tuning a 8- to 16-inch barrel AR, this weight pairs well with a hydraulic buffer and the right spring setup to ensure your bolt travels the full distance and locks properly behind the bolt catch. The stainless steel construction holds up to repeated use and the elements, making it a solid fit for range work, competitive shooting, or hunting applications where consistent performance counts.

Installation is straightforward—no special tools or gunsmithing required. Just drop it into your buffer tube ahead of your existing buffer. If your bolt already has a weight pinned into the rear, you can leave that in place; the spacer weight complements it rather than replaces it. This is a no-fuss upgrade for shooters looking to dial in their AR-platform gun without breaking the bank or spending a weekend in the vice.

Key Features

• Stainless steel construction for durability and corrosion resistance
• Compatible with both PCC and AR hydraulic buffer systems
• Drop-in installation—no modifications required
• Adds 2.5 ounces of weight to reduce felt recoil and improve reliability
• Extends buffer system by 0.75 inches for optimized bolt travel
• Prevents buffer tilting during cycling for consistent performance
• Designed with input from Blitzkrieg Components for real-world AR builds

Specifications

Frequently Asked Questions

What buffer tube do I need to use with this spacer weight?

For the bolt to cycle the full distance and stop properly behind the bolt catch, you'll want an AR-10/A5 length buffer tube, which is 0.75 inches longer internally than a standard carbine tube. This accounts for the extension the spacer adds.

Will this work on my short-barreled AR build?

Yes. The Kynshot spacer weight is especially useful on 8- to 16-inch barreled guns. It helps ensure reliable cycling and proper bolt lockup in shorter configurations where tuning the buffer system is more critical.

Do I need to remove my bolt weight if I install this?

No. If your bolt already has a weight pinned into the rear, Kynshot recommends leaving it in place. The spacer weight works alongside it to maintain the full mass of your bolt assembly.

What's included in the box?

The product is the spacer weight itself—a drop-in component. It does not include a buffer, spring, or buffer tube; you'll use it with your existing hydraulic buffer setup.