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
Larue - F.U.G. QD Forward Grip - #LT690-USED-DR
Used
$50.00This is a used LaRue Tactical LT-690 Forward Universal Grip (FUG), an AR battle grip designed to enhance weapon control with precision and reliability. Crafted with utmost attention to detail, this...$50.00 -
Out of stock
Harris Bipod - Hinged Bipod 6"-9" w/ Larue LT706 QD Mount - #S-BRM -LT706-USED-DR
Used
$100.00Used Harris Bipod S-BRM + LaRue LT706 combo. This product combines the excellent swiveling Harris S-BRM 6"-9" bipod with an integral, low-profile LaRue QD lever mount. We have replaced the Harris OEM...$100.00 -
Out of stock
Sig Sauer - MCX Spear LT 9" 300BLK Barrel and Gas Block Assembly - #8901315
Sig Sauer
$899.99Sig Sauer 9” complete stainless steel barrel and gas block assembly compatible with MCX SPEAR LT pattern firearms chambered in .300 Blackout. *Please Note: All NFA rules apply to the installation of...$899.99 -
Out of stock
Proof Research - 6 ARC Carbon Fiber Threaded Barrel 16" - #128657
Proof Research
$1,049.00Proof Research 6 ARC barrels are impressively lightweight, offering up to a 64% weight reduction compared to standard steel barrels. Engineered to handle extreme temperatures. Staying cooler...$1,049.00 -
Out of stock
Trijicon - Reflex 1x42 Dual Illuminated Sight w/ ARMS #15 Reflex Mount - #RX34-USED
Used
$475.00Trijicon’s technologically advanced Reflex sights offer shooters the perfect combination of speed and precision under virtually any lighting conditions. The Trijicon advantage includes- A bright...$475.00 -
Dead Air Armament - KeyMo Flash Hider 5/8x24 RH - DA302
Dead Air Armament
$89.00The Dead Air Armament KeyMo Flash Hider 5/8x24 RH (DA302) is Dead Air's KeyMo muzzle device for .308/7.62mm and larger calibers with 5/8x24 RH threading. Functions simultaneously as an effective...$89.00 -
On Sale
AB Suppressor - Raptor Flush Mount F22-FM
AB Suppressor
MSRP: $85.00Now: $75.00Was: $85.00The AB Suppressor Raptor Flush Mount F22-FM is the dedicated flush mount muzzle device host for the AB Suppressor F22 / Raptor series suppressor system for .22 LR platforms. The flush mount design...MSRP: $85.00Now: $75.00Was: $85.00 -
Out of stock
Sig Sauer - MCX/MPX Folding Stock Magpul SL-K Stock - #8900516
Sig Sauer
$249.99This assembly includes everything you need to add or replace your MPX or MCX stock with a folding buffer tube and the Magpul SL-K Stock. Fits MPX/MCX Platform Magpul SL-K Stock Side Folding 1913...$249.99 -
Out of stock
Sig Sauer - #RMCX-556N-16B-IR-Upper
Sig Sauer
$1,500.00MCX Spear-LT IR is a semi-automatic rifle chambered in .223 Rem and 5.56 NATO. Featuring a 16" barrel, this rifle combines durability and performance in a compact package. The FDE Cerakote finish and...$1,500.00 -
Out of stock
Sig Sauer - #PMCX-762R-11B-LT-Upper
Sig Sauer
$1,350.00The MCX-SPEAR LT introduces the much-anticipated 7.62×39 caliber to the MCX lineup. Equipped with a new latch system, the 7.62×39 MCX-SPEAR LT is designed to accommodate a wide range of 7.62 caliber...$1,350.00 -
Out of stock
Badger Ordnance - AR-15 Gas Block MK12 .750 Steel Black - #093000026
Badger Ordnance
$78.99This slim, low-profile replacement for factory front sight gas blocks is designed to provide clearance for optics and free-float handguards. Included with the gas block are set screws, a gas tube...$78.99 -
On Sale
Garmin - XERO C1 PRO - 0100261810
Garmin
MSRP: $923.98Now: $599.99Was: $923.98Whether you're handloading for the range or building arrows for the hunt, the Xero C1 Pro chronograph provides the speed data you need to hone your craft. At the size of a deck of cards the...MSRP: $923.98Now: $599.99Was: $923.98