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 stock
LMT Defense - 20" MWS .260 REM Barrel Assembly - #R-LM260B220S
LMT Defense
$893.00The 20-inch stainless-steel .260 Remington chambered MWS barrel features 5R right-hand rifling with a 1:9 twist. Designed for the LMT MWS receiver, this barrel utilizes a low-profile gas block, straight gas tube, and A2 birdcage for reduced flash. The...$893.00 -
Out of stockOn Sale
Streamlight TLR-1 Tactical Weapon Light - Police Trade-In
Streamlight
MSRP: $124.99Now: $99.99Was: $124.99MSRP: $124.99Now: $99.99Was: $124.99 -
BT Atlas - V8 Atlas Bipod - BT10
BT Atlas
$299.95The BT10 V8 Atlas Bipod mounts directly to any 1913 style Picatinny rail via a low profile two screw clamp assembly. It is comprised of 6061-T6 aluminum that is Mil-Spec Type III hard coat anodized and have heat treated stainless steel components...$299.95 -
Out of stockOn Sale
Aimpoint - Used Micro H-2 Red Dot Reflex Sight 2 MOA LRP Mount and Spacer - 200211-USED
Used
Now: $495.00Was: $550.00This is a used Aimpoint Micro H-2 compact reflex optic with a 2 MOA red dot reticle with an AR-15 ready QD picatinny mount. This optic ships as shown with no factory packaging and it is in great condition with various light scratches. The turret...Now: $495.00Was: $550.00 -
Out of stock
Knight's Armament - Like New 5.56 QDC 3-Prong Flash Suppressor Kit - 1/2"-28 TPI - 30555-Like-New
Knights Armament Company
$89.00These are in like-new condition, they were new rifle takeoffs. The KAC 3-Prong Flash Eliminator is an extremely effective flash suppressor design that also serves as a platform for attaching a Knight’s Armament Quick Disconnect Coupler (QDC) sound...$89.00 -
Out of stock
Knight's Armament - DOD Surplus M16 M5 RAS Forend Assembly w/ No Rib Rail Panels - #98065-1-DOD
Knights Armament Company
$400.00DOD Surplus Stock KAC M5 RAS (Rail Adapter System) was developed for use on the US military's M16A4, and with hundreds of thousands of rails issued to date, it is one of the most battle proven designs available for the AR-15 platform. This non-free...$400.00 -
On Sale
Aimpoint - ACRO S-2™ 9 MOA - Red Dot Reflex Sight w/ Integrated Shotgun Rib Mount - 200907
Aimpoint
Now: $755.00Was: $839.00The Aimpoint ACRO S-2™ 9 MOA Red Dot Reflex Sight (Model 200907) is Aimpoint's dedicated shotgun red dot sight, purpose-built for mounting on ventilated shotgun ribs. Based on the proven Acro 2nd generation platform, the ACRO S-2 features a large 9...Now: $755.00Was: $839.00 -
Trijicon - ACOG 1.5X16mm Dual Illuminated Green Ring & 2 MOA Dot - TA44-C-400329
Trijicon
$1,357.00The Trijicon 1.5x16S Compact ACOG® Scope (Model TA44-C-400329) is the ultimate compact riflescope for close-quarters combat, tactical teams, and speed-oriented competition. The ACOG (Advanced Combat Optical Gunsight) is the official medium-distance...$1,357.00 -
Out of stock
Trijicon - ACOG® 6x48 BAC Riflescope .50 BMG - #TA648-50
Trijicon
$3,230.00The military’s need for a magnified, self-luminous tactical sight that enhances target identification and increases hit probability on extended-range shots has given rise to the new Trijicon ACOG® 6x48. Powered by Trijicon’s patented...$3,230.00 -
Out of stock
Trijicon - 3x30 Compact ACOG® Scope .223 / 69gr. - #TA33-C-400368
Trijicon
$1,476.00Designed specifically for law enforcement and military applications, the Trijicon ACOG® 3x30 (Advanced Combat Optical Gunsight) riflescope offers the right combination of ample magnification, low light capability and long eye relief for users...$1,476.00 -
Out of stock
Knight's Armament - DOD Surplus M16 M5 RAS Forend Assembly - #98065-DOD
Knights Armament Company
$400.00DOD Surplus Stock KAC M5 RAS (Rail Adapter System) was developed for use on the US military's M16A4, and with hundreds of thousands of rails issued to date, it is one of the most battle proven designs available for the AR-15 platform. This non-free...$400.00 -
Out of stockOn Sale
EOTech - Micro 2 Power Magnifier Q/QD STS Mount Black - #EOTG43.STS
EOTech
MSRP: $649.00Now: $538.53Was: $649.00The G43 Magnifier is a miniaturized version of our battle-tested G33 Magnifier, making it one of the most compact and lightweight magnifiers available. The mount provides fast transitioning from 3X to 1X and comes with a 7mm spacer to...MSRP: $649.00Now: $538.53Was: $649.00