Parts & Accessories
Shop AR-15 and AR-10 parts and accessories from Boss Firearms. Our parts inventory includes LMT upper and lower receivers, Proof Research carbon fiber barrels, Forward Controls Design components, Geissele triggers, Magpul furniture, BCM parts, SureFire lights, and much more. Whether you're building a new rifle or upgrading your current setup, we carry the hard-to-find components trusted by military, law enforcement, and serious civilian shooters.
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Out of stockOn Sale
Unity Tactical - FAST Micro Red Dot Mount 2.26" FDE - FST-MROF
Unity Tactical
Now: $172.00Was: $189.00FAST is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. A 2.26" optical centerline height provides faster/easier reticle acquisition while wearing electronic EarPro/communications...Now: $172.00Was: $189.00 -
Out of stockOn Sale
Unity Tactical - FAST Micro Red Dot Mount 2.26" Black - FST-MROB
Unity Tactical
Now: $172.00Was: $189.00FAST is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. A 2.26" optical centerline height provides faster/easier reticle acquisition while wearing electronic EarPro/communications...Now: $172.00Was: $189.00 -
Out of stockOn Sale
Unity Tactical - FAST Micro Red Dot Mount 2.26" Black - FST-MISB
Unity Tactical
Now: $169.00Was: $186.00FAST is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. A 2.26" optical centerline height provides faster/easier reticle acquisition while wearing electronic EarPro/communications...Now: $169.00Was: $186.00 -
Out of stockOn Sale
Unity Tactical - Fast Micro Red Dot Mount 2.26" FDE - FST-MICF
Unity Tactical
Now: $186.00Was: $205.00FAST is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. A 2.26" optical centerline height provides faster/easier reticle acquisition while wearing electronic EarPro/communications...Now: $186.00Was: $205.00 -
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 rifles without strain or neck craning. The FAST Micro...Now: $186.00Was: $205.00 -
Out of stockOn Sale
Unity Tactical - Fast Magnifier Mount 2.26" - FST-MAPB
Unity Tactical
Now: $241.00Was: $265.00FAST is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. A 2.26" optical centerline height provides faster/easier reticle acquisition while wearing electronic EarPro/communications...Now: $241.00Was: $265.00 -
Out of stockOn Sale
Unity Tactical - Fast Micro Red Dot Mount 2.26" - FST-COMB
Unity Tactical
Now: $172.00Was: $189.00FAST is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. A 2.26" optical centerline height provides faster/easier reticle acquisition while wearing electronic EarPro/communications...Now: $172.00Was: $189.00 -
Out of stock
Knight's Armament - SR-25 URX 3.1 Forend Assembly 13.5" - 30259
Knights Armament Company
$515.84The KAC 7.62 URX 3.1 Rail is a free floating, fully modular replacement forend for the SR-25 platform. Unlike traditional quad rail designs, the URX 3.1 incorporates short sections of M1913 Picatinny rail at its front and rear ends for mounting tactical...$515.84 -
Out of stockOn Sale
Knights Armament - SR-25 URX Wrench - 23383
Knights Armament Company
Now: $379.25Was: $399.22Knights Armament SR-25 URX wrench. This wrench is required when installing a URX rail system on an SR-25 rifle.Now: $379.25Was: $399.22 -
Out of stock
Knights Armament - SR-15 Field Repair Kit - 23339-1
Knights Armament Company
$174.10The Knights Armament SR-15 Field Repair Kit includes the essential components to keep your rifle running over the long term. Also compatible with SR-16 variants. Field Repair Kit Contents: (1x) Ejector (1x) Ejector Roll Pin (1x) Ejector Spring (1x)...$174.10 -
Out of stockOn Sale
Knights Armament - Ball Lock Sling Swivel Eyelet - 21317
Knights Armament Company
Now: $71.94Was: $75.73KAC Ball Lock Sling Swivel Eyelet installs into QD sling swivel sockets and locks in place via a set screw.Now: $71.94Was: $75.73 -
Out of stockOn Sale
Knights Armament - Obverse Shoe Set (OSS) - 111782
Knights Armament Company
Now: $327.86Was: $345.11The OSS kit is two-part user level modular upgrade for the PVS-14 format monocular. No modification to the legacy monocular, special tools or training are required for an OSS upgrade which takes minutes. The OSS upgrade maximizes interface options for...Now: $327.86Was: $345.11