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
ARISAKA - Hand Stop - #IDX-M
Arisaka
$30.00The Patented Arisaka Indexer is a continuation of their low profile, minimal control accessories. It was developed due to end-user demand for an M-Lok version of their Finger Stop for Picatinny...$30.00 -
ARISAKA - Hand Stop - HS-P
Arisaka
$35.00The Patent Pending Arisaka Hand Stop is a continuation of our low profile, minimal control accessories. The primary goal of this accessory is to aid the user in pulling their rifle into their...$35.00 -
ARISAKA - Finger Stop - FS-P
Arisaka
$25.00The Arisaka Finger Stop was developed as a low profile, minimal control accessory. This version is for 1913 Picatinny rails. The Finger Stop has a slim profile which is ergonomically designed to be...$25.00 -
Sons of Liberty Gun Works - 5.56 158 Carpenter BCG - #SOLGWBCG556
Sons of Liberty Gunworks
$179.99If you're building an AR-15 meant to endure harsh conditions and perform beyond Mil-Spec standards, the Sons of Liberty Gun Works (SOLGW) Bolt Carrier Group is the go-to choice. Engineered with...$179.99Qty in Cart: 0Quantity:Price:$179.99Subtotal: -
Out of stock
Shield Arms - S15 Gen 2 Powercron 9mm 15rd Magazine for Glock G43X/G48 - #SA-S15-PC
Shield Arms
$39.99Shield Arms S15 Gen 2 Powercron 9mm Magazine for Glock G43X/G48, 15 Round. The S15 Magazine is a flush-fitting 15-round magazine designed for the Glock G43X and G48 pistols. The S15 is a steel...$39.99 -
Out of stockOn Sale
Proof Research - 26" Carbon Fiber Sendero .284 Bolt Action Rifle Barrel - #106556
Proof Research
Now: $899.00Was: $999.00By designing a bolt action barrel blank, we have opened up countless options for chambering in your favorite caliber and having the ability to fit a large variety of actions. Our bolt-action barrels...Now: $899.00Was: $999.00 -
On Sale
Surefire - Warcomp 5.56 Flash Hider Silencer Adapter - WARCOMP-556-1/2-28
Surefire
MSRP: $169.00Now: $152.00Was: $169.00The SureFire WARCOMP 5.56 Flash Hider/Suppressor Adapter (WARCOMP-556-1/2-28) is SureFire's flagship muzzle device for AR-platform 5.56mm rifles. It functions simultaneously as a highly effective...MSRP: $169.00Now: $152.00Was: $169.00 -
Out of stock
Franklin Armory - AR15 Binary Firing System Drop In Trigger Kit - #5550
Franklin Armory
$386.99Franklin Armory's revolutionary Binary Firing System (BFS) is ideal for three gun competitors, tactical shooters, and recreational enthusiasts. It features a three position selector - Mode 1 for...$386.99 -
Out of stock
Heckler & Koch - SL8 .223 10 Rd. Polymer Magazine - #219472S
Heckler & Koch
$69.00Heckler and Koch SL8 .223 10 Rd. Polymer Magazine. This high strength polymer magazine is made by H&K in Germany. Heckler and Koch parts and accessories are made to the highest standards in material...$69.00 -
Out of stockOn Sale
Sig Sauer - Romeo1 Pro Red Dot 1x30mm 3 MOA - #SOR1P100
Sig Sauer
Now: $349.99Was: $459.99The ROMEO-MSR is a sealed compact red dot or green dot sight intended for MSR,ÂNow: $349.99Was: $459.99 -
Out of stock
Q - Literally The Best Trigger Ever Made - #ACC-TRIGGER-LITERALLY
Q LLC
$275.00Q's Literally The Best Trigger Ever Made is crisp, clean, lightweight, safe, and has an unbelievably short reset. Weight: 1.9 oz Platform: AR-15/AR-10 Type: 2 Stage Adjustable: No$275.00 -
Out of stock
Heckler & Koch -P30L 9mm Tactical Barrel Threaded 13.5x1 LH - #229792
Heckler & Koch
$292.00Made in Germany at the HK factory from HK German Cold Hammer Forged barrel blanks, heat treated and finished to HK specs. This is the only HK factory manufactured P30L threaded barrel. The finest...$292.00