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 stockOn Sale
Aimpoint - 3X-C Maginifier 39mm FlipMount and TwistMount base - #200342
Aimpoint
MSRP: $882.00Now: $817.00Was: $908.00The Aimpoint 3X-C Magnifier is a top-tier optic designed to expand your capabilities for observation and target acquisition at extended distances. Whether you pair it with an Aimpoint red dot sight or use it as a hand-held monocular, the 3X-C offers a...MSRP: $882.00Now: $817.00Was: $908.00 -
Out of stockOn Sale
Aimpoint - Hunter H30S Red Dot Reflex Sight 2 MOA - #12690
Aimpoint
MSRP: $1,093.00Now: $999.00Was: $1,126.00The Aimpoint Hunter H30S is a cutting-edge red dot reflex sight meticulously crafted to elevate speed and precision in the field. This remarkable sight is primarily tailored for bolt-action rifles with standard or short actions, and it seamlessly mounts...MSRP: $1,093.00Now: $999.00Was: $1,126.00 -
Out of stockOn Sale
B&T - Telescopic Retractable Stock for MP5K/SP5K/SP89 - #BT-200598
Brugger & Thomet
Now: $600.00Was: $957.38B&T's telescopic retractable 5-position stock assembly for Heckler & Koch models, MP5K, SP5K and SP89 and clones. The B&T stock provides a comfortable and solid shoulder support while remaining very compact. The stock is self-locking and can...Now: $600.00Was: $957.38 -
Out of stockOn Sale
Magpul - MOE Trigger Guard FDE - #MAG417-FDE
Magpul Industries
Now: $8.50Was: $8.95The MOE Trigger Guard (Magpul Original Equipment) is an enhanced polymer drop in replacement for the AR15/M4 weapons platform. It features a shallow V shape for better use of gloves in tactical shooting or cold weather operations. The MOE Trigger Guard...Now: $8.50Was: $8.95 -
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 TP9SA, TP9v2 and TP9SF. Steel...$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 TP9SA, TP9v2 and TP9SF. Steel...$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 tube roll pin not included. 4140 Pre-Hardened Steel...$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 5/64″ set-screw and a 5/64″...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, quick-detach lever for easy attachment and removal. It...$815.00 -
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 transitioning from magnified to unmagnified holographic sight...$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 to carry. It is also fast and runs on a single 123...$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 effective engagement range of your sight system — identifying...$599.00