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Fail Zero
Fail Zero Bolt Carrier Group 5.56mm Black Nitride AR-15 - FZBLACKNITRIDENH
✕ Out of stock
$110.24 -
Timber Creek Outdoors
Timber Creek Dust Cover AR-15 Flat Dark Earth Cerakote Aluminum - ARBDCFDE
✕ Out of stock
$36.50 -
Timber Creek Outdoors
Timber Creek Forward Assist Red Anodized Fits AR-15 - ARFAR
✕ Out of stock
$36.50 -
Timber Creek Outdoors
Timber Creek Forward Assist Flat Dark Earth Cerakote Fits AR-15 - ARFAFDE
✕ Out of stock
$36.50 -
Timber Creek Outdoors
Timber Creek Oversized Trigger Guard Drop-In Flat Dark Earth For AR-15 - AROTGFDE
✕ Out of stock
$30.20 -
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TriggerTech
TriggerTech Duty Curved Trigger Two-Stage 3.50 lb Draw Weight Fits AR-15 - AH0TDB33NNC
✕ Out of stock
MSRP: $139.99$124.69 -
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Guntec USA
Guntec AR-15 Slabside Stripped Billet Upper Receiver Black - GTUPPERSLBLACK
✕ Out of stock
MSRP: $129.95$103.28 -
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Alexander Arms
Alexander Arms AR-15 Upper Hunter 6.5 Grendel 18" Black - UHU-65-BL
✕ Out of stock
MSRP: $1,094.95$762.90 -
Midwest Industries
Midwest Industries Handguard Slim Line 9.25" M-LOK Fits AR-15 - MI-SLH9.25
✕ Out of stock
MSRP: $167.95$132.62
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