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Alexander Arms Top Products, Including Alexander Arms Gun Parts, Alexander Arms AR15 Parts, Alexander Arms Rifle Parts & More! — 62 products / 77 models

When you need specialized products to complement your favorite calibers and firearm platforms, you need Alexander Arms. Our collection of Alexander Arms Gun Parts, Alexander Arms AR15 Parts, Alexander Arms Rifle Parts, and more has a focus on reliability, performance, and consistent fit. Whether you're looking for factory ammunition for popular cartridges such as .50 Beowulf and 6.5 Grendel, magazines engineered to feed rounds reliably under varied conditions, or reloading equipment, Alexander Arms has it all. All of their upper assemblies, bolts, and other key components all you to configure or upgrade compatible rifles and pistols to exact specifications, ensuring each shot you take is to the best of your abilities. Since all of the parts and ammunition designed by Alexander Arms work as an integrated system, each one helpsenhance accuracy, function, and your overall shooting experience. Choose Alexander Arms for caliber-specific solutions, matched components, and ammunition that work together to get the most from these distinctive chamberings.image

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Make sure your firearms are performing at their best when you pick up Alexander Arms gear from OpticsPlanet! We carry all the best gun parts and ammo, so you can outfit all your favorite firearms to meet your exact specifications. Shop online or on our top-rated mobile app to get what you need wherever you are. Plus, we offer Free Shipping on most orders over $49!

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62 Products in Alexander Arms

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Image of Alexander Arms .50 Beowulf Upper Receiver Build Kit 2 models Alexander Arms .50 Beowulf Upper Receiver Build Kit (1) As Low As (Save Up to 21%) $639.99
Image of Alexander Arms 6.5 Grendel Brass 2 models Alexander Arms 6.5 Grendel Brass (7) As Low As (Save Up to 34%) $87.99 $0.88 - $1.02/Piece
Image of Alexander Arms AR-15 6.5 Grendel Incursion 16in Upper Kit Alexander Arms AR-15 6.5 Grendel Incursion 16in Upper Kit List: $762.95 (Save 14%) $655.99
Image of Alexander Arms .50 Beowulf Millennium Compensator Alexander Arms .50 Beowulf Millennium Compensator List: $151.75 (Save 28%) $109.99
Image of Alexander Arms 6.5 Grendel Ammunition Case Gauge Alexander Arms 6.5 Grendel Ammunition Case Gauge List: $71.99 (Save $2.00) $69.99
Image of Alexander Arms Hornady .50 Reloading Dies Alexander Arms Hornady .50 Reloading Dies (3) List: $195.99 (Save $6.00) $189.99
Image of Alexander Arms AR-15 .17 HMR 18in Standard Upper Receiver Alexander Arms AR-15 .17 HMR 18in Standard Upper Receiver (1) List: $1,177.71 (Save 17%) $979.99
Image of Alexander Arms AR15 Tactical Rifle Upper Alexander Arms AR15 Tactical Rifle Upper List: $1,059.99 (Save 19%) $859.99
Image of Alexander Arms AR-15 6.5mm Grendel 16in Tactical Upper Receiver Alexander Arms AR-15 6.5mm Grendel 16in Tactical Upper Receiver List: $1,050.95 (Save 24%) $799.99
Image of Alexander Arms .50 Beowulf 10 Rounds Magazine Alexander Arms .50 Beowulf 10 Rounds Magazine, 10 (15) List: $59.99 (Save 27%) $43.99 Best Rated
Image of Alexander Arms 6.5 Grendel Reloading Handbook Vol 2 Alexander Arms 6.5 Grendel Reloading Handbook Vol 2 List: $49.99 (Save $2.50) $47.49
Image of Alexander Arms AR-15 Barrel - Threaded, 6.5mm Grendel 3 models Alexander Arms AR-15 Barrel - Threaded, 6.5mm Grendel (7) As Low As (Save Up to 25%) $242.89
Image of Alexander Arms AR-15 .17 HMR 10-Round Polymer Rifle Magazine Alexander Arms AR-15 .17 HMR 10-Round Polymer Rifle Magazine, 10 List: $20.80 (Save 38%) $12.99
Image of Alexander Arms .50 Beowulf Pepper Pot Threaded Muzzle Brake Alexander Arms .50 Beowulf Pepper Pot Threaded Muzzle Brake List: $139.65 (Save 44%) $77.99
Image of Alexander Arms Ammunition Case Gauge Alexander Arms Ammunition Case Gauge (2) $79.99
Image of Alexander Arms AR-15 6.5 Grendel 24 Round Rifle Magazine Alexander Arms AR-15 6.5 Grendel 24 Round Rifle Magazine (1) List: $51.84 (Save 25%) $38.99
Image of Alexander Arms Tank Muzzle Brake Alexander Arms Tank Muzzle Brake (5) List: $140.72 (Save 26%) $103.99 Best Rated
Image of Alexander Arms .50 Beowulf Tank Muzzle Brake Kit 2 models Alexander Arms .50 Beowulf Tank Muzzle Brake Kit (3) As Low As (Save Up to 42%) $87.99 Clearance
Image of Alexander Arms Loaded .50 Beowulf 400 Grain Hawk FP Centerfire Rifle Ammunition Alexander Arms Loaded .50 Beowulf 400 Grain Hawk FP Centerfire Rifle Ammunition, 20, FMJ List: $107.49 (Save 33%) $71.79 $3.59/Round
Image of Alexander Arms 6.5 Grendel Cleaning Kit Alexander Arms 6.5 Grendel Cleaning Kit List: $93.99 (Save 11%) $83.99
Image of Alexander Arms .50 Beowulf 4 Rounds Magazine Alexander Arms .50 Beowulf 4 Rounds Magazine (4) List: $51.89 (Save 28%) $37.49
Image of Alexander Arms .50 Beowulf 7 Rounds Magazine Alexander Arms .50 Beowulf 7 Rounds Magazine (2) List: $50.99 (Save 22%) $39.99
Image of Alexander Arms AR-15 6.5 Grendel 17 Round Rifle Magazine Alexander Arms AR-15 6.5 Grendel 17 Round Rifle Magazine (1) List: $51.84 (Save 17%) $42.99
Image of Alexander Arms 6.5 Grendel 4 Rounds Magazine Alexander Arms 6.5 Grendel 4 Rounds Magazine List: $48.09 (Save 19%) $38.99
Image of Alexander Arms Loaded .50 Beowulf 300 Grain Hornady FTX Centerfire Rifle Ammunition Alexander Arms Loaded .50 Beowulf 300 Grain Hornady FTX Centerfire Rifle Ammunition, 20, FMJ (2) List: $95.49 (Save 35%) $62.19 $3.11/Round
Image of Alexander Arms 6.5 Grendel 10 Rounds Magazine Alexander Arms 6.5 Grendel 10 Rounds Magazine, 10 (5) List: $49.18 (Save 20%) $39.49
Image of Alexander Arms Loaded .6.5 Grendel 123 Grain Lapua Scenar Centerfire Rifle Ammunition Alexander Arms Loaded .6.5 Grendel 123 Grain Lapua Scenar Centerfire Rifle Ammunition, 20, SBT (1) List: $62.99 (Save 36%) $40.29 $2.01/Round
Image of Alexander Arms Loaded .50 Beowulf 200 Grain Polycase ARX Centerfire Rifle Ammunition Alexander Arms Loaded .50 Beowulf 200 Grain Polycase ARX Centerfire Rifle Ammunition, 20, FMJ (1) List: $74.99 (Save 30%) $52.19 $2.61/Round
Image of Alexander Arms 6.5 Grendel Reloading Handbook Vol 1 Alexander Arms 6.5 Grendel Reloading Handbook Vol 1 (1) $44.99
Image of Alexander Arms Loaded .50 Beowulf 350 Grain Hornady XTP Centerfire Rifle Ammunition Alexander Arms Loaded .50 Beowulf 350 Grain Hornady XTP Centerfire Rifle Ammunition, 20, FMJ List: $79.49 (Save 36%) $50.89 $2.54/Round
Image of Alexander Arms Loaded .50 Beowulf 350 Grain Round Shoulder Centerfire Rifle Ammunition Alexander Arms Loaded .50 Beowulf 350 Grain Round Shoulder Centerfire Rifle Ammunition, 20, FMJ (5) List: $67.49 (Save 37%) $42.59 $2.13/Round Best Rated
Image of Alexander Arms Loaded .6.5 Grendel 129 Grain Hornady SST Centerfire Rifle Ammunition Alexander Arms Loaded .6.5 Grendel 129 Grain Hornady SST Centerfire Rifle Ammunition, 20, SBT (3) List: $55.07 (Save 33%) $36.79 $1.84/Round
Image of Alexander Arms Alexander Magazine .17hmr 10 Rounds Polymer Alexander Arms Alexander Magazine .17hmr 10 Rounds Polymer, 10 List: $16.45 $16.39
Image of Alexander Arms .50 Beowulf Thread Protector Alexander Arms .50 Beowulf Thread Protector List: $65.99 (Save $6.00) $59.99
Image of Alexander Arms AR-15 6.5 Grendel 16in Incursion Threaded AR Barrel Alexander Arms AR-15 6.5 Grendel 16in Incursion Threaded AR Barrel $269.99
Image of Alexander Arms .50 Beowulf Brass Alexander Arms .50 Beowulf Brass (2) List: $149.99 (Save 13%) $129.99 $1.30/Piece
Image of Alexander Arms Ulfberht .338 Lapua 10 Rounds Magnum Magazine Alexander Arms Ulfberht .338 Lapua 10 Rounds Magnum Magazine (1) List: $91.17 (Save $3.18) $87.99
Image of Alexander Arms .17 HMR Cleaning Kit Alexander Arms .17 HMR Cleaning Kit List: $67.99 (Save $4.00) $63.99
Image of Alexander Arms Lee .50 Reloading Dies Alexander Arms Lee .50 Reloading Dies $109.99
Image of Alexander Arms Pepper Pot Threaded Muzzle Brake Alexander Arms Pepper Pot Threaded Muzzle Brake List: $95.99 (Save 25%) $71.99
Image of Alexander Arms Lee 6.5 Grendel Reloading Dies Alexander Arms Lee 6.5 Grendel Reloading Dies (1) List: $83.99 (Save $4.00) $79.99
Image of Alexander Arms .50 Beowulf 16inch Chrome Moly Barrel Tactical Upper Receiver Alexander Arms .50 Beowulf 16inch Chrome Moly Barrel Tactical Upper Receiver List: $965.95 (Save 17%) $799.99
Image of Alexander Arms A2 Flash Hider Alexander Arms A2 Flash Hider $31.99
Image of Alexander Arms 6.5 Grendel SBR 11.5in Pistol Complete Upper Receiver Alexander Arms 6.5 Grendel SBR 11.5in Pistol Complete Upper Receiver List: $918.95 (Save $18.96) $899.99
Image of Alexander Arms .50 Beowulf 16in Hunter Upper Receiver Alexander Arms .50 Beowulf 16in Hunter Upper Receiver List: $999.95 (Save $29.96) $969.99
Image of Alexander Arms 6.5 Grendel Upper Receiver Build Kit 3 models Alexander Arms 6.5 Grendel Upper Receiver Build Kit As Low As (Save Up to 21%) $579.99
Image of Alexander Arms Gun Cleaning Kit for .50 Beowulf Alexander Arms Gun Cleaning Kit for .50 Beowulf List: $101.99 (Save 10%) $91.99
Image of Alexander Arms Cleaning Rod Guide 3 models Alexander Arms Cleaning Rod Guide As Low As $75.99
Image of Alexander Arms The Blitz Semi-Auto Rifle, 6.5mm Grendel, 18 in barrel Alexander Arms The Blitz Semi-Auto Rifle, 6.5mm Grendel, 18 in barrel Info Buy Accessories
Image of Alexander Arms Tactical Velocity Trigger Semi-Auto Rifle, .50 Beowulf, 16.5in Barrel Alexander Arms Tactical Velocity Trigger Semi-Auto Rifle, .50 Beowulf, 16.5in Barrel Info Buy Accessories
Image of Alexander Arms Hunter Semi-Auto Rifle, 6.5mm Grendel, 18 in barrel Alexander Arms Hunter Semi-Auto Rifle, 6.5mm Grendel, 18 in barrel Info Buy Accessories
Image of Alexander Arms Tactical Semi-Auto Rifle, 6.5mm Grendel, 18in Barrel Alexander Arms Tactical Semi-Auto Rifle, 6.5mm Grendel, 18in Barrel Info Buy Accessories
Image of Alexander Arms Hunter Semi-Auto Rifle, .50 Beowulf, 16in Barrel Alexander Arms Hunter Semi-Auto Rifle, .50 Beowulf, 16in Barrel Info Buy Accessories
Image of Alexander Arms Tactical Semi-Auto Rifle, 6.5mm Grendel, 16in Barrel Alexander Arms Tactical Semi-Auto Rifle, 6.5mm Grendel, 16in Barrel Info Buy Accessories
Image of Alexander Arms Tactical Rifle Rifle, .50 Beowulf, 16.5 inch Barrel Alexander Arms Tactical Rifle Rifle, .50 Beowulf, 16.5 inch Barrel Info Buy Accessories
Image of Alexander Arms Tactical Semi-Auto Rifle, .17 Hornady Magnum Rimfire, 18in Barrel Alexander Arms Tactical Semi-Auto Rifle, .17 Hornady Magnum Rimfire, 18in Barrel Info Buy Accessories
Image of Alexander Arms Tactical Semi-Auto Rifle, .50 Beowulf, 18 in barrel Alexander Arms Tactical Semi-Auto Rifle, .50 Beowulf, 18 in barrel Info Buy Accessories
Image of Alexander Arms Semi-Auto Rifle, .17 Hornady Magnum Rimfire, 18in Barrel Alexander Arms Semi-Auto Rifle, .17 Hornady Magnum Rimfire, 18in Barrel Info Buy Accessories
Image of Alexander Arms Highlander Standard Semi Auto Pistol, 50 Beowulf, 12 in Barrel Alexander Arms Highlander Standard Semi Auto Pistol, 50 Beowulf, 12 in Barrel, 7 Info Buy Accessories
Image of Alexander Arms Standard Semi-Auto Rifle, 300 AAC Blackout, 16in Barrel Alexander Arms Standard Semi-Auto Rifle, 300 AAC Blackout, 16in Barrel Info Buy Accessories
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Alexander Arms How To Guides View All

.300 Blackout vs. 5.56 NATO Ammo by Brett R.
What Is an AICS Magazine? by Brett R.
Best AR Iron Sights of 2026 on OpticsPlanet by OpticsPlanet Product Expert
.380 vs 9mm: Which Is Best for Self-Defense? by Brett R.

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