KAK Industry AR-15 Mil-Spec Carbine Buffer Tube
Click to see full view
KAK Industry
Overview
The KAK Industry AR-15 Mil-Spec Carbine Buffer Tube is designed specifically for use in carbine-length builds, adhering to the Mil-Spec standard for compatibility with a wide range of stocks. This tube is essential for housing the buffer and spring, ensuring smooth cycling of the action in your rifle. It's commonly found in mid-length gas system configurations chambered in 5.56 NATO, making it a reliable choice for those looking to build or upgrade their AR-15.
Specifications
September 2026 on GunPartPicker
KAK Industry AR-15 Mil-Spec Carbine Buffer Tube ranked #14 of the 49 buffer tubes builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #25 of the 67 buffer tubes builders have added. Builds with this buffer tube are mostly chambered in 5.56 NATO (87%), mostly on mid-length gas (64%, then carbine-length 18%), and mostly AR-15 (93%).
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today both retailers we track have it in stock. Prices barely moved in September 2026, holding around $19.80, so there haven't been real sales lately. Buying today, the lowest price is $19.80 at Primary Arms, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which buffer tube to pick?
We ranked every buffer tube by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Tube Guide →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Wilson Combat AR-15 Lower Receiver Forged
CMMG AR-15 A2 Pistol Grip
PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13" Lightweight Hex M-LOK Upper No BCG or CH
Rise Armament Ra-140 Rave Super Sporting Trigger Drop-In Flat
Enhance Your AR-15 with Tacfire's Black Anodized Buffer -Optimal Performance - MAR043
CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 3 →Builds in the community that include the Kak Industry Ar-15 Mil-Spec Carbine Buffer Tube
| Build | Parts | Total |
|---|---|---|
 | 24 | $1314.83 |
 | 24 | $523.69 |
 | 24 | $826.03 |
No reviews yet. Be the first to review this product!