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Serialized lowers · parts kits · triggers · stocks

The half of the rifle that carries the serial numberStripped and complete AR-15 lowers from licensed makers, and every part it takes to build one.

A lower is a firearm and ships to the dealer you name; a parts kit, a trigger, a buffer and a stock are parts and ship to your door. The build sheet tells you which is which, the guides take the build in order, and the price is re-checked against the distributor when you order.

StrippedCompleteLPKTriggersStocksUppers
Open the build sheetWhy a lower is a firearm

New releases this week

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The build path

Whole catalogue →

Serialized stripped and complete lowers

How a lower transfers →

Parts kits, triggers and controls

Installation guide →

Bench picks this week

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New on the bench

All new arrivals →
Serialized onlyEvery lower we sell is a finished, marked receiver from a licensed maker and transfers through your dealer. What the law says
Parts to your doorParts kits, triggers, buffers, stocks, grips and complete uppers are not firearms and ship by ground to your address.
Fitment statedTube diameter, buffer weight, trigger pin size and generation are named on every listing where the maker publishes them.
Free over $999Flat $29.99 shipping on everything below that, lowers or parts.

Buffers, stocks and grips

Buffer guide →

Build notes from owners

Written by people who own the gun
★★★★★
“solid cartridge. No jams and very little kick. It will work fine for my up and coming hunters (grandkids)!”
Harry R.Winchester Deer Season XP .300 Blackout
★★★★★
“This Anaconda is very nicely machined and finished it actually exceeded my expectations it is very accurate and handles full power loads well.Got it at a great price and the transfer was seamless.”
Matthew J.Colt Anaconda 8-Inch .44 Remington Mag Stainless Revolver
★★★★★
“Love this AR. Wonderful gun. Easy to use. Easy to accessorize. Easy to take apart and clean. Would highly recommend!”
Sofian S.Diamondback Firearms DB15 M-LOK 5.56 NATO .223 Remington OD Green Cerakote Rifle
★★★★★
“I purchased this gun as a blemished item not a single scratch or imperfection perfect product great price thank you bud”
Christopher P.Colt Python Blemished 8-Inch .357 Mag .38 Special Stainless Steel Revolver
★★★★☆
“Seems to be a well made/machined shotgun but the action is super stiff. I've cleaned it and lubed it with some CLP but still stiff. I hope it loosens up after firing, I'll post more after I have 100 rounds through it.”
Jon M.Mossberg 590 Shockwave Raptor Grip 12 Gauge Blue/Black Shotgun
★★★★★
“Amazing firearm shoots great operation is flawless I'd expect nothing less from Daniel Defense”
Sherman J.Daniel Defense DDM4 PDW .300 Blackout Blue/Black Pistol

Where lowers ship

All 20 cities →

Texas and the Gulf

TXPlanoCollin CountyTXKilleenBell CountyTXMidlandMidland CountyLALake CharlesCalcasieu ParishFLLakelandPolk CountyFLDaytona BeachVolusia County

The South

GAAugustaRichmond CountyGAColumbusMuscogee CountyTNClarksvilleMontgomery CountyTNMurfreesboroRutherford CountyALMontgomeryMontgomery CountyARFort SmithSebastian CountyOKStillwaterPayne County

Midwest and East

KSTopekaShawnee CountyMOColumbiaBoone CountyIADavenportScott CountyINEvansvilleVanderburgh CountyOHDaytonMontgomery CountyKYLexingtonFayette CountyPAHarrisburgDauphin County

Complete rifles and uppers

Rifle or pistol →

Most reviewed

Ranked by owner reviews

Makers

All brands →

The parts bins

All categories →

A lab for the half of the rifle that carries the serial number

AR15 Lower Lab is an online shop built around the AR-15 lower receiver. Serialized stripped and complete lowers from licensed makers sit at the front, followed by the lower parts kits, triggers, buffer tubes, buffers, springs, stocks, grips and ambidextrous controls that turn a bare forging into a working rifle, and the complete uppers and rifles that finish the job. Every lower ships to the licensed dealer you name for the background check; every part ships to your door.

We sell finished, serialized receivers only. There are no unfinished receivers, no receiver blanks and no tooling to complete them here, and nothing on this site converts a rifle to automatic fire. The guides follow the build in order: why a lower is a firearm and how it transfers, the rifle-or-pistol decision, installing the parts kit, buffers and stocks, and controls and grips. Your town's dealer transfer rules are on the ship-to pages.

More buying guides