Rainier Arms has the best AR 15 accessories, AR 15 parts, furniture, and attachments available. We have all the popular brands (of "furniture" AR parts and complete AR15 options) and more than a few badass new products from up-and-coming companies you haven't even heard of yet.
That doesn't help you, however, if you don't know what you're looking for…or why. Hence our series of firearm accessories guides.
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Seekins Precision AR pistol with SB Tactical brace and NightForce scope.
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AR15 Accessories and Upgrade Possibilities
- Understanding the AR15 Forward Assist
- Best AR15 Bolt Carrier Group options
- Recommended AR 15 Lower Receivers
- Recommended AR 15 Upper Receivers
- Best AR 15 Barrel guide
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Yes, AR15 accessories can (and should!) be used on bullpup configurations. Lots of nice furniture on this Springfield Armory Hellion!
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The AR-15 rifle is an extraordinarily modular rifle. You can switch out, replace, or upgrade virtually any part of it. In most cases, you don't even need a gunsmith, just the accessory or parts kit and a few tools, and in some cases, you don't even need the tools!
A few of the more common AR parts that get swapped around include what we've linked above and listed below:
- Trigger
- Bolt carrier group (BCG)
- Various lower parts (if not the entire lower receiver)
- Various upper receiver parts (if not the entire upper receiver)
- Barrel
- Gas block
- Ambi switch (ambidextrous safety selector)
- Muzzle device
You can also switch out AR 15 sights, pistol grip, bolt catch, and even the trigger guard.
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An X-ray image of a .300 Blackout AR pistol featuring a number of different manufacturers, including Armaspec (SMB buffer, not the lower parts kit), Rosco Mfg, Cloud Defensive, True North Concepts, Neo Mag, American Defense Manufacturing, Primary Arms, Aero Precision, Reptilia Corp, and SB Tactical.
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AR Furniture: Even More Modular Accessories
- Best AR 15 Charging Handles
- Recommended AR15 Red Dot Sights
- Top AR15 Handguards
- Recommended AR 15 muzzle devices
Some of the more common AR accessories sought by serious gun owners include those linked above and listed below. As you can see, there are some for both the upper receiver and lower receiver. Some are functional, others more aesthetic.
- Picatinny rail options and alternatives (M-LOK, KeyMod, etc.)
- Vertical or angled foregrip or handstop
- Tactical flashlight
- Sling
- Front and rear sight iron sight options (we put AR 15 sights in the modular list because there are many ARs now that feature either a fixed front sight by itself or no sights at all.
- Carry handle
- Sling mount (often QD/Quick Detach) and tactical sling
- Bipod
- Monopod
- Picatinny mount (or other rail type) for red dot sight, AR 15 scope, weapon light, etc.
- Pistol grip
Some AR15 accessories and rifle upgrades can be used across numerous platforms: carbine, PCC, AR pistol, PDW, you name it. This Dead Air Silencers "Primal" suppressor (from Dead Air Armament) can certainly be attached to something small...but it's rated for big calibers like the .458 SOCOM and .338 Lapua, too.
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Closeup of a Mission First Tactical QD sling attachment on their EXT free-float rail system.
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Troy Industries SBR (PDW?) with various AR accessories aboard.
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AR15 add-ons including foregrip and WML on Leapers UTG receiver set.
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Additional information:
