Rugged Suppressors OBSIDIAN9 3 Lug Adapter 1/2x28
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Plan your Class 3 dealer
Suppressors go through a Class 3 (SOT) dealer, and the federal tax on them has been $0 since January 1, 2026. You still pay the dealer's transfer fee. Some states only allow suppressors and SBRs that are federally registered or possessed in compliance with federal law. Check your state's statute before you buy.
Federal and state suppressor rulesRugged Suppressors
Overview
The Rugged Suppressors Obsidian9 3 Lug Adapter is designed for 9mm caliber firearms, providing a reliable method for attaching suppressors to your weapon system. The tri-lug mounting type ensures quick and secure attachment, allowing for easy transitions between suppressed and unsuppressed firing. This adapter is commonly used in builds that prioritize compactness and rapid deployment, making it suitable for submachine guns and short-barreled rifles.
Specifications
Rugged Suppressors OBSIDIAN9 3 Lug Adapter 1/2x28
Available Merchants(4)
Prices checked
Price Alert
October 2026 on GunPartPicker
Rugged Suppressors OBSIDIAN9 3 Lug Adapter 1/2x28 ranked #112 of the 239 suppressors builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #66 of the 536 suppressors builders have added. Builds with this suppressor are mostly chambered in 5.56 NATO (86%, then 9mm 14%), split between carbine-length (50%) and mid-length (50%) gas systems, and mostly AR-15 (91%, then AR-9 9%).
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today all 4 retailers we track have it in stock. Prices barely moved in October 2026, holding around $68, with no real sale all month. Buying today, the lowest price is $68 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
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Frequently Built With
The part most often added in each category by the builds that include this one
PSA AR-15 Complete Lower Magpul MOE EPT Edition - Flat Dark Earth, No Magazine
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Magpul MOE SL-M Carbine Stock Mil-Spec OD Green
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
Radical Firearms 5.56 Socom Complete AR-15 Upper - Rpr M-LOK Handguard - 16"
Wilson Combat M16 Bolt Carrier Assy 5.56 NATO Polished Black Nitride
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 builds →Builds in the community that include the Rugged Suppressors Obsidian9 3 Lug Adapter 1/2x28
| Build | Parts | Total |
|---|---|---|
 | 25 | $2253.75 |
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