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CMMG
Overview
The CMMG AR-15 Gas Tube is designed specifically for carbine-length gas systems, ensuring reliable gas flow and optimal cycling for your rifle. Made from polished stainless steel, this gas tube provides durability and corrosion resistance, which is essential for maintaining consistent performance under various conditions. You'll often find this component in builds chambered in 5.56 NATO that are intended for a balanced blend of accuracy and reliability.
Prices checked
CMMG AR-15 Gas Tube Stainless Steel Carbine ranked #18 of the 91 gas tubes builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #16 of the 137 gas tubes builders have added. Builds with this gas tube are mostly chambered in 5.56 NATO (72%, then .223 Wylde 17%), mostly on carbine-length gas (86%, then mid-length 8%), and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today all 7 retailers we track have it in stock. Prices barely moved in October 2026, holding around $13.96, with no real sale all month. Buying today, the lowest price is $13.96 at Classic Firearms, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every gas tube by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Gas Tube Guide →Check it against the live catalog:
The part most often added in each category by the builds that include this one
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Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Cmmg Ar-15 Gas Tube Stainless Steel Carbine
| Build | Parts | Total |
|---|---|---|
 | 20 | $1913.97 |
 | 20 | $821.79 |
 | 20 | $4023.35 |
 | 9 | $968.29 |
 | 14 | $2481.65 |
 | 25 | $2814.62 |
 | 27 | $2084.83 |
 | 10 | $1306.48 |
 | 21 | $1854.63 |
 | 27 | $1872.41 |
 | 19 | $1359.52 |
 | 11 | $931.68 |
1 global rating
Top reviews
CMMG stainless steel carbine length gas tube has a polished finish that shines through an open top handguard. Pin holes correctly located. Cycles consistently on a 14.5 mid build. Stainless handles heat better than parkerized after extended fire.
