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Diamondback

DB 556 Suppressor Inconel Black Cerakote

SKU DBS556i · MFR# DBS-556i

$798✓ In stock
NFA item — $0 federal tax stamp. Order, we file the ATF Form 4 on eForms, you pick up at your SOT dealer after approval. Flat $14.99 firearm shipping.
Licensed FFL · Class 2 SOTWe file the Form 4$0 tax stamp
How the Form 4 process works
Transfers on an ATF Form 4 with a $0 federal tax stamp (as of Jan 1, 2026). We file the paperwork on eForms and keep you posted on status; you pick up at your SOT dealer with photo ID after ATF approval. How the Form 4 works → NFA & suppressor guide →

The Ventra DBS-556i is a compact full-auto rated suppressor for 5.56 NATO platforms. It pairs a short overall length with engineered gas flow to reduce backpressure lower blowback and preserve shooter comfort. Manufactured in Inconel 718 this military-grade alloy is the premium choice for heat resistance durability and longevity. The DBS-556i is built to perform in the harshest environments. Specifications: Caliber Rating: 5.56 x 45 mm Length with Direct Thread Mount: 5.711 in OAL (w/o Mount): 5.336 in Added Length to Firearm: 5.088 in Diameter: 1.55 in Weight (Body): 12.0 oz Direct-Thread Adaptor Weight: 2.0 oz Material: Inconel 718 Core 17-4 SS Housing Finish Options: Cerakote Armor Black Black Nitride+ Adapter Mount: Direct Thread HUB Adaptor Muzzle Thread Pitch: 1/2-28 Hub Compatible: Yes Full-Auto Rated: Yes Minimum Barrel Length: None

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Specifications
Manufacturer SKUDBS-556i
UPC810035758018
CategoryNfa
BrandDiamondback
ColorBlack
Length5.7"
Diameter1.5500
ConditionNew
CA Prop 65Yes
Thread Type1/2-28
Body MaterialStainless Steel
Attachment TypeDirect Thread
Baffle MaterialInconel
Full Auto RatedYes
Primary Caliber5.56mm
Suppressor TypeSuppressor
FulfillmentSOT dealer + Form 4