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WMD Guns
Overview
The WMD Guns AR-15 Gas Tube is designed for a mid-length gas system, which optimizes the timing and cycling of the action, ensuring reliable operation. Made from carbon steel and finished with a nitride coating, this gas tube offers enhanced durability and corrosion resistance, crucial for maintaining performance in various conditions. This gas tube is commonly found in builds featuring a mid-length gas system and chambered in 5.56 NATO.
Prices checked
WMD Guns AR-15 Gas Tube Nitromet Mid-Length is the fourth most added gas tube on GunPartPicker so far in October 2026, behind the Strike Industries AR-15 Gas Tube - Carbine Length, with about 10% of all gas tubes added to builds. Down from #1 in May, June, July, August and September. Builds with this gas tube are mostly chambered in 5.56 NATO (66%, then .223 Wylde 25%), mostly on mid-length gas (72%, then carbine-length 17%), and mostly AR-15 (95%).
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 4 of the 5 retailers we track have it in stock. It dipped to $14.40 at BattleHawk Armory for a stretch in September 2026, well under its usual $17.99, so sales do come around. Buying today, the lowest price is $14.40 at BattleHawk Armory, which matches the best price we saw in September.
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:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length
| Build | Parts | Total |
|---|---|---|
| meta? | 24 | $2343.64 |
 | 23 | $2403.52 |
 | 13 | $2587.59 |
 | 12 | $634.02 |
 | 14 | $2948.59 |
 | 9 | $623.43 |
 | 18 | $1216.08 |
 | 12 | $1192.43 |
| 17 | $873.22 |
 | 7 | $1104.10 |
| 31 | $2702.75 |
 | 15 | $4953.54 |
1 global rating
Top reviews
Swapped out my plain melonite tube for this WMD Nitromet on a mid length 16 inch build. Coating finish is noticeably more refined than a standard gas tube. Gas key alignment was spot on, no binding when I installed the BCG. Held up fine after 500 rounds suppressed.
