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 stockOn Sale
Magpul - M3 300 Blackout 30 Round Magazine - #MAG800-BLK
Magpul Industries
Now: $15.15Was: $15.95The PMAG 30 AR 300 B GEN M3 is a purpose-designed magazine for rifles chambered in 300 Blackout. Since its inception, 300 Blackout shooters have had to use a magazine designed for another...Now: $15.15Was: $15.95 -
Out of stock
Canik - 9mm 18 Round Magazine - #MA548
Canik
$34.99Canik's TP9 series magazine are a standard factory replacement magazine. With durable steel construction, the TP9 magazines ensure flawless function and long-term reliability in your firearm. Fits...$34.99 -
Out of stock
Canik - 9mm 20Round Magazine - #MA550
Canik
$39.99Canik's TP9 series magazines are a standard factory replacement magazine. With durable steel construction, the TP9 magazines ensure flawless function and long-term reliability in your firearm. Fits...$39.99 -
Out of stock
Troy - Gas Block .875" Black - #SGAS-875-00BT-00
Troy
$45.00Troy's .875 Low Profile Gas Block is made specifically for bull barrel rifles that have a 0.875 gas block seat. Machined from 4140 pre-hardened steel finished with MIL-STD Manganese Phosphate. Gas...$45.00 -
Out of stockOn Sale
Ergo - .750 Low-Pro Adjustable Gas Block - #4822
Ergo Grip
Now: $43.25Was: $51.99The Ergo 4822 .750 Adjustable Gas Block is designed to fit under the Ergo Modular and SuperLite™ Rail System, as well as most other manufacturer’s free float handguards. Adjustments are made via a...Now: $43.25Was: $51.99 -
Out of stock
EOTech - EXPS3 Holographic Sight Red 68 MOA Ring - EXPS3-4
EOTech
$815.00The E is for Extreme. The EXPS3 offers true 2-eyes-open shooting and a 7 mm raised base that still allows for iron sight access. It features easy-to-adjust side buttons and an adjustable, locking,...$815.00 -
Out of stockOn Sale
LMT Defense - 7.62 NATO barrel assembly 20" Stainless Steel - LM308B220S
LMT Defense
MSRP: $947.00Now: $852.30Was: $877.95LMT AR-10 Barrel for use with the LMT MWS upper receivers. Specifications: 7.62 NATO / .308 20" Stainless steel 1:11.25" RH twist 5R cut Low profile gas block Straight gas tube A2 flash hiderMSRP: $947.00Now: $852.30Was: $877.95 -
EOTech - Magnifier 3X QD Mount Switch to Side - G33.STS
EOTech
$645.00The EOTech G33 3x Magnifier with Switch-to-Side (STS) Quick Detach Mount (G33.STS) pairs EOTech's popular 3x magnifier with an integrated STS mount for instant, one-hand flip to the side when...$645.00 -
Out of stock
EOTech - Tactical Holographic 8MOA Ring - XPS2-2TAN
EOTech
$649.00The XPS2 is the shortest, smallest and lightest EOTech model holographic weapon sight available without night vision. Its size and weight make it convenient for hunters and law enforcement officers...$649.00 -
EOTech - G45 Magnifier 5X - G45.NM
EOTech
$599.00The EOTech G45 5x Magnifier (G45.NM) provides outstanding 5x magnification for use with EOTech holographic weapon sights, red dot sights, and reflex optics. The G45 significantly extends the...$599.00 -
Out of stock
EOTech - XPS2 Holographic Sight Red 68 MOA Ring - XPS2-300
EOTech
$655.00The XPS2 is the shortest, smallest and lightest EOTech model holographic weapon sight available without night vision. Its size and weight make it convenient for hunters and law enforcement officers...$655.00 -
Out of stock
EOTech - G33 Magnifier 3X No Mount Tan - G33.NMTAN
EOTech
$529.00The G33 Magnifier is the selected magnifier of USSOCOM, and is compact and lightweight. The optic offers tool-free vertical and horizontal adjustments, larger field-of-view and an adjustable...$529.00