Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+
Price: $39.43 – $68.99 — In stock at 3 retailers.
Prices last checked August 19, 2026 across 3 retailers.
This Prometheus EG 6.03mm Stainless Steel 407mm Precision Barrel is a great addition to your favorite AEG if you are looking to upgrade your range and accuracy. This barrel length works great for those wanting to squeeze a little more barrel length out of their M4 Carbine setup or who wants to run a barrel into their barrel extension/mock suppressor. As always, when utilizing tight bore barrels, please use high quality BBs to avoid jams and to achieve overall better performance.
Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+ price comparison: the lowest price is $39.43 at eHobby Asia, the highest is $68.99, and the median across 3 tracked listings is $47.99. Comparing retailers can save up to 43% ($29.56) versus the highest-priced listing.
Compatible with: M4/AR
See all SIG 55x magazines & fitment →
Where to buy the Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+: prices at 3 retailers
- eHobby Asia: $39.43 — In Stock
- RedWolf Airsoft: $47.99 — In Stock
- Amped Airsoft: $68.99 — In Stock
Frequently asked questions about the Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+
- How much does the Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+ cost?
- The Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+ ranges from $39.43 to $68.99 across 3 retailers. The lowest current price is at eHobby Asia. Prices are updated regularly from each store's live catalog.
- Where can I buy the Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+?
- The Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+ is currently in stock at 3 retailers including eHobby Asia, RedWolf Airsoft, Amped Airsoft. We track availability across 3 airsoft stores and update stock status regularly.
- Is the Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+ a good aeg parts upgrade?
- The Prometheus EG Barrel 407mm for M4A1/ SR16/ SG551+ by Prometheus is listed in our AEG Parts category and is priced from $39.43. We aggregate prices from 3 retailers so you can compare and find the best deal. Check the price comparison table above for current pricing from each store.
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