Kak Industry167514494
Kak Buff/Sprng Kit Ar15 K-Spec 5.5Oz$52.09
Availability: In Stock
Current Stock: Out of stock
The Kak Buff/Sprng Kit AR15 K-Spec 4.7oz is a complete buffer and spring assembly designed to smooth out recoil impulse and reduce muzzle rise in AR-15 carbines. This kit pairs Kak Industry's K-SPEC buffer—engineered with a captured compression system—alongside a flatwire spring and installation tool, giving you everything needed for a straightforward drop-in upgrade. At 4.7 ounces (H2 weight), this buffer strikes a balance suited to most standard AR-15 carbine builds and shooting styles, from range sessions to hunting.
What sets the K-SPEC design apart is its focus on simplicity and durability. Rather than relying on complex internals that wear and fail, Kak's captured compression approach absorbs recoil energy cleanly, minimizing bolt bounce and flattening muzzle rise without extra moving parts to maintain. The flatwire spring complements the buffer's performance, working together to even out the impulse and reduce felt recoil. Because it's manufactured entirely in the US and built to last, you're investing in a buffer system that'll function reliably through years of shooting.
Installation is straightforward: this kit includes a buffer tool to make the swap quick and hassle-free. Just confirm your AR uses a carbine-length buffer tube—that's the standard on most carbine and mid-length rifle platforms—and you're ready to go. Whether you're fine-tuning a defensive rifle, smoothing out a hunting build, or simply upgrading from factory parts, the K-Spec 4.7oz kit offers solid recoil management at good value.
| Buffer Weight | 4.7 oz (H2) |
| Buffer Type | K-SPEC captured compression |
| Buffer Tube Length | Carbine |
| Included Components | Buffer, flatwire spring, installation tool |
| Manufacturing | USA |
This kit is designed for AR-15s equipped with a carbine-length buffer tube. If your rifle has a carbine receiver extension (the most common setup), this buffer will work. Confirm your buffer tube length before ordering—this is not compatible with rifle-length or pistol-length tubes.
The 4.7oz (H2) weight is a mid-range option for standard AR-15 loads. It's designed to balance recoil reduction with reliable bolt operation across typical carbine and hunting ammunition. Heavier buffers slow bolt cycling further and reduce felt recoil more; lighter buffers allow faster cycling. H2 is a good starting point for most shooters.
The kit includes the 4.7oz K-SPEC buffer, a flatwire spring, and a buffer installation tool. You have everything needed to remove your old buffer and spring and install this system without additional tools or parts.
The K-SPEC uses a captured compression system rather than loose internal weights. This design eliminates complexity, reduces internal wear points, and provides consistent, reliable recoil absorption without moving parts that can degrade over time.
SKU: 167514477 • Width: 1.25in • Height: 1.25in • Depth: 8.5in • Weight: 8oz
Availability: In Stock
Current Stock: Out of stock
The Kak Buff/Sprng Kit AR15 K-Spec 4.7oz is a complete buffer and spring assembly designed to smooth out recoil impulse and reduce muzzle rise in AR-15 carbines. This kit pairs Kak Industry's K-SPEC buffer—engineered with a captured compression system—alongside a flatwire spring and installation tool, giving you everything needed for a straightforward drop-in upgrade. At 4.7 ounces (H2 weight), this buffer strikes a balance suited to most standard AR-15 carbine builds and shooting styles, from range sessions to hunting.
What sets the K-SPEC design apart is its focus on simplicity and durability. Rather than relying on complex internals that wear and fail, Kak's captured compression approach absorbs recoil energy cleanly, minimizing bolt bounce and flattening muzzle rise without extra moving parts to maintain. The flatwire spring complements the buffer's performance, working together to even out the impulse and reduce felt recoil. Because it's manufactured entirely in the US and built to last, you're investing in a buffer system that'll function reliably through years of shooting.
Installation is straightforward: this kit includes a buffer tool to make the swap quick and hassle-free. Just confirm your AR uses a carbine-length buffer tube—that's the standard on most carbine and mid-length rifle platforms—and you're ready to go. Whether you're fine-tuning a defensive rifle, smoothing out a hunting build, or simply upgrading from factory parts, the K-Spec 4.7oz kit offers solid recoil management at good value.
| Buffer Weight | 4.7 oz (H2) |
| Buffer Type | K-SPEC captured compression |
| Buffer Tube Length | Carbine |
| Included Components | Buffer, flatwire spring, installation tool |
| Manufacturing | USA |
This kit is designed for AR-15s equipped with a carbine-length buffer tube. If your rifle has a carbine receiver extension (the most common setup), this buffer will work. Confirm your buffer tube length before ordering—this is not compatible with rifle-length or pistol-length tubes.
The 4.7oz (H2) weight is a mid-range option for standard AR-15 loads. It's designed to balance recoil reduction with reliable bolt operation across typical carbine and hunting ammunition. Heavier buffers slow bolt cycling further and reduce felt recoil more; lighter buffers allow faster cycling. H2 is a good starting point for most shooters.
The kit includes the 4.7oz K-SPEC buffer, a flatwire spring, and a buffer installation tool. You have everything needed to remove your old buffer and spring and install this system without additional tools or parts.
The K-SPEC uses a captured compression system rather than loose internal weights. This design eliminates complexity, reduces internal wear points, and provides consistent, reliable recoil absorption without moving parts that can degrade over time.
SKU: 167514477 • Width: 1.25in • Height: 1.25in • Depth: 8.5in • Weight: 8oz