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
Spuhr - Trijicon RMR Interface - A-0010
Spuhr
$62.50Interface for attaching Trijicon RMR Type 1 and 2 and Trijicon SRO to an ISMS scope mount. Includes shim plate and screws. The A-0010 footprint also matches the following, though screw sizing may...$62.50 -
Out of stock
Spuhr - Wilcox RAPTAR Adapter - A-0029
Spuhr
$92.00Interface for attaching Wilcox RAPTAR, RAPTAR-S (Gen2,) RAPTAR Lite ES, or SilencerCo RADIUS laser range finder to ISMS scope mount. Includes screws. Height: 25 mm/.984” Length: 85 mm/3.346”...$92.00 -
Out of stock
Spuhr - G3 Stock Assembly - R-410
Spuhr
$313.50The R-410 G3 Stock Assembly brings the venerable HK G3 platform into the 22nd century, providing it with better handling and recoil management.Using the factory end cap, the 6-position adjustable...$313.50 -
Out of stock
Spuhr - Picatinny Rail 35mm - A-0012
Spuhr
$39.00Picatinny Rail for Spuhr interface. Includes screws. Height: 10 mm/0.39” Length: 35 mm/1.38” Weight: 14 g/0.5 oz$39.00 -
Out of stock
Spuhr - 34mm Picatinny Mount 0 MOA - 1.18" - SP-4001C
Spuhr
$475.00Durability: Prevents damage on scope due to flexing during heavy recoil or rough environment. The snipers rifle and the spotters carbine can have the same mount, enabling the use of same equipment...$475.00 -
Out of stock
Spuhr - Bubble Level - A-0119
Spuhr
$92.00External Bubble Level Assembly designed to attach forward on the scope mount body or ring.Perfect solution for shooters who are unable to focus on the built-in level in the standard ISMS series or...$92.00 -
Out of stockOn Sale
Daniel Defense - DDM4V7 S 5.56 NATO Complete Upper Receiver - 23-128-00275-047
Daniel Defense
Now: $1,174.00Was: $1,263.00The Daniel Defense M4 V7 S Upper Receiver Group is built around a Cold Hammer Forged 11.5" Government profile barrel and equipped with a DD improved Flash Suppressor to reduce flash signature. It...Now: $1,174.00Was: $1,263.00 -
Out of stockOn Sale
Knight's Armament - M4/M5 RAS Hardware Kit - 30450
Knights Armament Company
Now: $33.17Was: $34.92The KAC Medium URX II free floating forend features an integral, flip-up front sight assembly that folds flush with the continuous top rail when not in use, creating a seamless look. Full length...Now: $33.17Was: $34.92 -
Out of stockOn Sale
Knights Armament - 7-Piece 7.62 Muzzle Device Shim Set - 30130
Knights Armament Company
Now: $34.62Was: $36.45Shim set for Knight's Armament 7.62mm rifles using 3/4"x24 muzzle devices. This 7-Piece Shim Set is for use in properly timing a flash hider or muzzle brake. Shims the muzzle device off of the end...Now: $34.62Was: $36.45 -
Out of stockOn Sale
Knights Armament - 7.62MM QDC Flash Suppressor Kit - 112954
Knights Armament Company
Now: $177.75Was: $187.11The Knights Armament QDC Flash Suppressor is compatible with KAC's QDC suppressor and is threaded in 5/8x24. Note, this muzzle device will not fit the SR25. Weights 3.6oz and includes a shim kit and...Now: $177.75Was: $187.11 -
Out of stockOn Sale
Knights Armament - 762QDC Flash Hider 7.62 NATO - 1/2X28 - 111583
Knights Armament Company
Now: $123.44Was: $129.94Thread: 1/2"-28 compatible with Knight's Armament SR25 QDC suppressor. Includes: Knight's Armament Company QDC Flash Suppressor and shim kit with Rocksett. 7.62 QDC Flash Suppressor...Now: $123.44Was: $129.94 -
Out of stockOn Sale
Knights Armament - QD FLASH HIDER - 1/2"-28 - #93048
Knights Armament Company
MSRP: $120.06Now: $114.06Was: $120.06The KAC M4QD Flash Hider is an effective flash suppressor that also serves as a platform for attaching a Knight&rsquoMSRP: $120.06Now: $114.06Was: $120.06