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Geissele Automatics Guns for Sale

Founded: 2004

HQ: United States

Geissele Automatics, LLC is a United States manufacturer founded in 2004 by Bill Geissele. It is best known for AR-15 two-stage triggers such as the Hi-Speed National Match, SSA, SSA-E, and SSF, along with Super Modular Rail handguards and AR-15 rifles.

Popular Geissele Automatics Models for Sale

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Geissele Automatics Auctions

3 active auctions ending soon

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 16" SD556

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 16" SD556

Geissele SD-556 AR-15 AR15 SSA-E Nanoweapon BCG

Geissele Automatics MK16 9.3" M-LOK Rail AR-15 Handguard AR15

Geissele Automatics MK16 9.3" M-LOK Rail AR-15 Handguard AR15

Geissele Automatics Super MCX SSA Dynamic Flat Trigger Bow

Geissele Automatics Super MCX SSA Dynamic Flat Trigger Bow

Recently Sold

Geissele Automatics Super Duty 556 Lower Receiver SD556 AR15 Rifle AR-15

Sold On 08/24/2026

Geissele Automatics Super Duty 556 Lower Receiver SD556 AR15 Rifle AR-15

Geissele Automatics MK4 10" Handguard AR15 Mark 4 MK IV

Sold On 08/10/2026

Geissele Automatics MK4 10" Handguard AR15 Mark 4 MK IV

Geissele Automatics Super Precision 30MM Scope Mount

Sold On 08/09/2026

Geissele Automatics Super Precision 30MM Scope Mount

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 10.3" FDE SD556

Sold On 08/07/2026

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 10.3" FDE SD556

Geissele Automatics SD-556 AR-15 AR15 SD556 BRACE

Geissele Automatics MK4 10" Handguard AR15 Parts Mark 4 Mark4 MK

Sold On 08/05/2026

Geissele Automatics MK4 10" Handguard AR15 Parts Mark 4 Mark4 MK

Geissele Automatics MK4 10" Handguard Mark Four

Geissele Automatics MK4 10" Handguard MK 4 Mark IV

Sold On 08/05/2026

Geissele Automatics MK4 10" Handguard MK 4 Mark IV

Geissele Automatics MK4 10" Handguard MKIV

SBR Geissele Automatics Super Duty SD-556 Mod 1 AR-15 AR15 11.5" +ORIG CASE

Sold On 07/31/2026

SBR Geissele Automatics Super Duty SD-556 Mod 1 AR-15 AR15 11.5" +ORIG CASE

Geissele Super Duty SD-556 AR-15 AR15 SD556

Geissele Automatics SD-556 Super Duty AR-15 AR15 Tan SD556 +CASE

Sold On 07/24/2026

Geissele Automatics SD-556 Super Duty AR-15 AR15 Tan SD556 +CASE

Geissele SD-556 SD556 AR-15 AR15 14.5 P&W

SBR Geissele Automatics Super Duty SD-556 AR-15 AR15 SD556 UNITY RISER

Sold On 07/22/2026

SBR Geissele Automatics Super Duty SD-556 AR-15 AR15 SD556 UNITY RISER

Geissele Super Duty AR-15 AR15 SD 556 SD556 OLIGHT

Geissele Automatics URG-I Complete Upper Near Clone 14.5" 5.56 NATO 5.56mm

Sold On 07/17/2026

Geissele Automatics URG-I Complete Upper Near Clone 14.5" 5.56 NATO 5.56mm

GEISSELE Automatics Super Duty MOD 1 5.56 NATO AR-15 AR15 16 +ORIG BOX

Sold On 06/25/2026

GEISSELE Automatics Super Duty MOD 1 5.56 NATO AR-15 AR15 16 +ORIG BOX

Geissele Automatics Super Duty 556 AR-15 AR15

GEISSELE Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 16.5" P&W SD556

Sold On 06/24/2026

GEISSELE Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 16.5" P&W SD556

Geissele Automatics SD-556 AR-15 AR15 DDC RAIL

GEISSELE Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 SD556 ACH

Sold On 06/24/2026

GEISSELE Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 SD556 ACH

Geissele Automatics Super Duty SD-556 AR-15 AR15

GEISSELE AUTOMATICS Super Duty SD-556, MOD 1 5.56 NATO AR-15 AR15 +ORIG BOX

Sold On 06/17/2026

GEISSELE AUTOMATICS Super Duty SD-556, MOD 1 5.56 NATO AR-15 AR15 +ORIG BOX

Geissele Super Duty AR-15 AR15 FACTORY CORRECT

GEISSELE Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 16 DDC +TRIGGER!

Sold On 06/15/2026

GEISSELE Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 16 DDC +TRIGGER!

Geissele Super Duty SD-556 AR-15 SD556 SMR MK16

Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 11.5 DDC MK16

Sold On 06/07/2026

Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 11.5 DDC MK16

Geissele Super Duty SD-556 AR-15 AR15 SF MUZZLE

LIMITED Geissele Automatics GFR-05 20th Anniv AR-15 +COMPLETE MATCHED UPPER

Sold On 05/22/2026

LIMITED Geissele Automatics GFR-05 20th Anniv AR-15 +COMPLETE MATCHED UPPER

19 Of 20 Geissele GFR-05 GFR05 AR-15 +ORIG BOX

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 16" SD556 CAMO

Sold On 05/20/2026

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 16" SD556 CAMO

Geissele Automatics SD-556 SD556 AR15 AR 15 M-Lok

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Geissele Automatics GFR-05 Maritime Recce 6mm ARC DDC 16.5" AR15 ORIG BOX

Sold On 05/17/2026

Geissele Automatics GFR-05 Maritime Recce 6mm ARC DDC 16.5" AR15 ORIG BOX

Geissele GFR-05 AR-15 14.5" P&W GFR05 MK16 Rail

GEISSELE Automatics Super Duty MOD1-A AR-15 AR15 16" +2 MAGS, HARD CASE

Sold On 05/06/2026

GEISSELE Automatics Super Duty MOD1-A AR-15 AR15 16" +2 MAGS, HARD CASE

LOW SERIAL Geissele Super Duty MOD1-A AR 15 AR15

Geissele SD-556 Super Duty Daniel Defense DDM4V7S 5.56 AR-15 AR15 11.5"

Sold On 04/10/2026

Geissele SD-556 Super Duty Daniel Defense DDM4V7S 5.56 AR-15 AR15 11.5"

Geissele Daniel Defense SD-556 DDM4-V7S AR-15 AR15

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 16.1" M-LOK

Sold On 03/27/2026

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 16.1" M-LOK

Geissele SD556 AR-15 AR15

Geissele Automatics Super Duty 5.56 NATO AR-15 AR15 16"

Sold On 02/16/2026

Geissele Automatics Super Duty 5.56 NATO AR-15 AR15 16"

Geissele Super Duty 556 AR-15 AR15

Geissele Automatics Super Duty MOD 1 Pistol SD-556 AR-15 AR15 +ORIG BOX

Sold On 01/21/2026

Geissele Automatics Super Duty MOD 1 Pistol SD-556 AR-15 AR15 +ORIG BOX

Geissele Automatics Super Duty AR15 AR 556 SD556

Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 11.5" M-LOK

Sold On 12/15/2025

Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 11.5" M-LOK

Geissele Automatics Super Duty SD-556 AR-15 AR15

LIKE-NEW Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 16" DDC

Sold On 11/14/2025

LIKE-NEW Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 16" DDC

Geissele Super Duty 556 AR-15 AR15 M-LOK SureFire

Geissele Automatics Super Duty MOD1 SD-556 5.56 NATO AR-15 AR15 16.1"

Sold On 11/14/2025

Geissele Automatics Super Duty MOD1 SD-556 5.56 NATO AR-15 AR15 16.1"

Geissele Super Duty 556 AR-15 AR15

Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 16" Sport Rifle

Sold On 11/07/2025

Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 16" Sport Rifle

Geissele Super Duty SD556 AR-15 AR15 556 Defense

CLEAN! Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 12.5" SD556

Sold On 10/31/2025

CLEAN! Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 12.5" SD556

Geissele Super Duty AR-15 PISTOL AR15 FDE M-LOK

Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 16.1" Rifle

Sold On 10/27/2025

Geissele Automatics Super Duty SD-556 5.56 NATO AR-15 AR15 16.1" Rifle

Geissele Automatics Super Duty 556 AR-15 AR15

Geissele SD-556 Super Duty MOD1 SBA3 5.56 NATO AR-15 AR15 11.5" +2 MAGS

Sold On 10/24/2025

Geissele SD-556 Super Duty MOD1 SBA3 5.56 NATO AR-15 AR15 11.5" +2 MAGS

Geissele SD-556 SD556 AR-15 AR15 Tactical Pistol

Geissele Automatics Super Duty MOD1 SD-556 5.56 NATO AR-15 AR15 OD Green

Sold On 10/01/2025

Geissele Automatics Super Duty MOD1 SD-556 5.56 NATO AR-15 AR15 OD Green

Geissele Super Duty 556 AR-15 AR15 16.25" Rifle

Geissele Automatics Super Duty MOD 1 SD-556 AR-15 5.56-NATO AR15 16" SD556

Sold On 08/18/2025

Geissele Automatics Super Duty MOD 1 SD-556 AR-15 5.56-NATO AR15 16" SD556

Geissele Automatics Super Duty 556 AR-15 AR15

Geissele Automatics SD-556 Super Duty Rifle 5.56 NATO AR-15 AR15 16.0"

Sold On 07/25/2025

Geissele Automatics SD-556 Super Duty Rifle 5.56 NATO AR-15 AR15 16.0"

Geissele SD-556 AR-15 AR15 SD556

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 10.3" +ORIG BOX

Sold On 07/14/2025

Geissele Automatics SD-556 Super Duty 5.56 NATO AR-15 AR15 10.3" +ORIG BOX

Geissele Automatics SD-556 AR-15 AR15

Geissele Automatics SD-556 SD556 Super Duty 5.56 NATO AR-15 AR15 10.5

Sold On 07/04/2025

Geissele Automatics SD-556 SD556 Super Duty 5.56 NATO AR-15 AR15 10.5

Geissele Automatics SD-556 SD556 AR-15 AR15

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