Gun Parts
Welcome to the Gun Parts superstore at Boss Firearms Company, LLC. Whether you are undertaking a custom precision build, performing routine armorer maintenance, or upgrading an existing platform, we stock the high-performance components you need. As an authorized dealer for premium OEM and aftermarket manufacturers, we provide everything from stripped receivers and match-grade triggers to enhanced bolt carrier groups (BCGs) and duty-ready barrels for rifles, handguns, and shotguns.
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Out of stock
Unity Tactical - Fast Omni Magnifier Mount - FST-OMF
Unity Tactical
MSRP: $269.00$264.00Unity Tactical, FAST, Magnifier Mount, 2.26" Optical Height, Compatible with G23, G30, G33, G43, G45, VMX-3T, Micro3X, Micro6X, 3X MAG-C, Juliet3X, Juliet4X, Juliet Micro3X, Anodized Finish, Flat...MSRP: $269.00$264.00 -
Unity Tactical - Fast Omni Magnifier Mount - FST-OMB
Unity Tactical
$264.00The Unity Tactical FAST Omni Magnifier Mount (FST-OMB) is a premium magnifier mount designed to position EOTech/Aimpoint-compatible 3x and 5x magnifiers at the optimal 2.26" bore-to-optic height...$264.00 -
Out of stockOn Sale
Unity Tactical fast LPVO mount 2.05" optical height 30mm FDE
Unity Tactical
MSRP: $369.00Now: $335.00Was: $369.00FAST is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. A 2.05" optical centerline height provides faster/easier reticle...MSRP: $369.00Now: $335.00Was: $369.00 -
On Sale
Unity Tactical fast red dot riser elevates lower 1/3 mount to 2.26" optical height
Unity Tactical
MSRP: $105.00Now: $95.00Was: $105.00The Unity Tactical FAST Red Dot Riser (FST-ORB) in Black elevates lower 1/3 co-witness mounted red dots and optics to 2.26" optical height. Designed for optics currently mounted at lower 1/3...MSRP: $105.00Now: $95.00Was: $105.00 -
On Sale
Unity Tactical - FAST Red Dot Riser Absolute Cowitness to 2.26" - FST-ORAF
Unity Tactical
Now: $95.00Was: $105.00The Unity Tactical FAST Red Dot Riser in FDE/Tan elevates absolute co-witness optics to 2.26" optical height (FST-ORAF), providing the same FAST riser functionality as the black version in a Flat...Now: $95.00Was: $105.00 -
On Sale
Unity Tactical Fast red dot riser. Elevates absolute co-witness to 2.26" Direct to Picatinny
Unity Tactical
MSRP: $105.00Now: $95.00Was: $105.00The Unity Tactical FAST Riser elevates absolute co-witness mounted red dots to 2.26" optical height (FST-ORAB) — designed for red dot sights mounted in absolute co-witness height rings/mounts that...MSRP: $105.00Now: $95.00Was: $105.00 -
On Sale
Unity Tactical Fast Micro 2.26" Optical Height Red Dot Mount FST-MICB - T1/T2 Compatible, Black Anodized Finish
Unity Tactical
Now: $186.00Was: $205.00The Unity Tactical FAST Micro 2.26" Optical Height Red Dot Mount (FST-MICB) elevates T1/T2-footprint micro red dot sights to a 2.26" bore-to-optic height, enabling a natural head position on AR-15...Now: $186.00Was: $205.00 -
Knight's Armament - Rib Rail Panel - 95047
Knights Armament Company
MSRP: $27.99$26.74The Knight's Armament Rib Rail Panel (KAC PN: 95047) is KAC's ribbed polymer rail panel for covering unused slots on KAC RAS (Rail Adapter System) Picatinny quad-rail handguards. The rib design...MSRP: $27.99$26.74 -
Out of stock
Knight's Armament - Rubberized Thumb Rest - 30537
Knights Armament Company
$23.76The Knight's Armament Rubberized Thumb Rest (KAC PN: 30537) is KAC's soft-touch rubberized thumb rest for installation on MIL-STD-1913 Picatinny rail sections on KAC handguards and upper receivers...$23.76 -
Knight's Armament - Combat Trigger Guard Kit - KM20491-1
Knights Armament Company
$49.93The KAC Combat Trigger Guard is enlarged for use with gloves or for shooters with large hands. It is compatible with most mil-spec AR-15 lower receivers, but may require slight fitting in some...$49.93 -
Out of stock
Knight's Armament - 45° Offset Folding Micro Sights - 200 to 600 Meter - #31593
Knights Armament Company
$334.13The KAC 45 Degree 200-600 Meter Offset Folding Sight Kit allows shooters easy access to a set of backup iron sights for close range target engagements, without the need to remove their primary optic...$334.13 -
Knight's Armament - JAMR - 111789
Knights Armament Company
$455.99The Knight's Armament JAMR (KAC PN: 111789) is KAC's Joint Assault Machine gun Rail — an accessory rail system designed for use with the M249 SAW (Squad Automatic Weapon) and other crew-served light...$455.99