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Alexander Arms
Alexander Arms (160) E-Lander 5.56 NATO 10rd Magazine, Black - F99933410
✕ Out of stock
$24.98 -
VLTOR Weapon Systems
VLTOR Weapon Systems Mil-Spec Imod Standard Black Stock - AIB-MSB
✕ Out of stock
MSRP: $98.95$95.05 -
STERN DEFENSE
Stern Defense Def. Magazine Adapter AD9 AR-15 To Glock 9/40 Magnum - 001-SD MAG-AD9-GLOCK-9AND40-M
✕ Out of stock
MSRP: $179.99$168.76 -
Hogue Inc.
Hogue AR-15/M16 Kit Overmolded Beavertail Grip and Collapsible Buttstock - 15656
✕ Out of stock
$67.96 -
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Cerus Gear AR-15 Instructional Promat Charcoal Gray-Pink - RMAR15INSPNK
✕ Out of stock
MSRP: $28.99$24.58 -
Night Fision LLC
Night Fision Tritium Front Sight Post Yellow Ring for AR-15 - AR-000-002-YGXX
✕ Out of stock
$49.50 -
Lancer
Lancer L5AWM Gen 2 Translucent Urban 223 Rem/5.56 NATO 30rd Magazine, Dark Earth - L5G230TUD
✕ Out of stock
$35.78 -
Wilson Combat
Wilson Combat Tactical Trigger Unit Single-Stage Drop-In for AR-15 - TR-TTU
✕ Out of stock
$172.41 -
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Faxon Firearms
Faxon AR-15 Barrel 5.56 NATO 7.5" 1:8 SOCOM Profile Black - 15A58P7NSQ
✕ Out of stock
MSRP: $163.00$144.37 -
Yankee Hill Machine
Yankee Hill Machine Stripped Billet Upper Receiver For AR-15 - YHM110BILLET
✕ Out of stock
MSRP: $229.95$173.95 -
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Asc
Asc AR-15 223 Rem/5.56 NATO 10rd Magazine, Stainless Steel - 3010223SSBMOASC
✕ Out of stock
$39.50 -
Faxon Firearms
Faxon ARAK-21 Complete Upper Receiver 5.56 NATO 12.5" Barrel - URSSB556P
✕ Out of stock
MSRP: $999.00$858.25 -
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Amend2
Amend2 AR Pink Desert Night 5.56 NATO 30rd Magazine, Camo - 556MODCPDN30
✕ Out of stock
$38.58 -
Hogue
Hogue OverMolded Grip Black Rubber with Finger Grooves for AR-15 M16 - 15000
✕ Out of stock
MSRP: $29.95$25.46 -
D&H Tactical
D&H Tactical Magazine 12.7X42 10-Round Black with Laser Logo AR-15 - DHT11905RT
✕ Out of stock
$39.00 -
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Lancer Systems
Lancer L5AWM Opaque 223 Rem 10rd Magazine, Black - L5AWML-10-20-BLK
✕ Out of stock
$41.78
AR-15 Parts
Everything for building, upgrading or maintaining an AR-15: uppers, bolt carrier groups, barrels, handguards, stocks, triggers, grips, charging handles and magazines. We list over 3,100 AR-15 parts from Magpul, Strike and LBE Unlimited.
Building or upgrading an AR-15
Most AR-15 parts follow mil-spec dimensions, but a few do not. Buffer tubes come in mil-spec and commercial diameters, so match your stock to your tube. Gas systems come in pistol, carbine, mid-length and rifle lengths, and the gas block has to match your barrel's journal diameter.
If you are building from a stripped lower, a lower parts kit, buffer tube kit and stock finish the lower. On the upper, match the barrel, gas system and handguard length before you order.
AR-15 Parts FAQ
Will these parts fit an AR-10 or .308 AR?
Most will not. AR-10 and LR-308 rifles use larger receivers, bolts and magazines. Look for AR-10, LR-308 or .308 in the title.
What is the difference between 5.56 and .223 Wylde?
A .223 Wylde chamber safely fires both 5.56 NATO and .223 Remington with good accuracy, and so does a 5.56 chamber. A .223 Remington chamber should not fire 5.56.
Shop related: Gun Parts · AR-15 Magazines · Red Dots & Holographic Sights · Rifle Ammo