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Lower Parts Kits 27 Items

Lower Parts Kits Up To 19% Off— 27 Products In Stock / 3 Models

Lower Parts Kits are purpose-built components designed to deliver consistent performance for the specific needs of recreational shooters, hunters, and professionals. Our lineup includes 27 in-stock products with savings Up To 19% Off on qualifying orders, all backed by our Forever Guarantee®.

We carry Lower Parts Kits from 20 of the most respected brands in the industry, including AERO PRECISION, CMMG, COLT, KAK INDUSTRY LLC.. Verified buyers rate our Lower Parts Kits 4.4 Ratings out of 342 Reviews from verified buyers, reflecting the durability and craftsmanship that earn repeat purchases.

From the range to the field, every Lower Parts Kits product we ship meets the standards our customers have trusted since 1939. Continue browsing our full selection of Rifle Lower & Upper Parts Kits for more great products at Brownells.

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Products:  1  –  32  of 55
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Product badge GEISSELE AUTOMATICS LLC - AR-15 ULTRA DUTY LOWER PARTS KITS GEISSELE AUTOMATICS LLC - AR-15 ULTRA DUTY LOWER PARTS KITS
5 Stars
(5.0)

$123.99 - $127.99

$153.00 - $158.00

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Product badge CMMG - GUNBUILDER'S LOWER PARTS KIT FOR AR-15 LOWER CMMG - GUNBUILDER'S LOWER PARTS KIT FOR AR-15 LOWER
5 Stars
(4.6)

$31.99

$34.99

In stock
Product badge CMMG - AR-15/M16 LOWER SPRING KIT CMMG - AR-15/M16 LOWER SPRING KIT
5 Stars
(4.3)

$10.99

$12.49

In stock
Product badge GEISSELE AUTOMATICS LLC - AR-15 LOWER PARTS KIT GEISSELE AUTOMATICS LLC - AR-15 LOWER PARTS KIT
5 Stars
(3.5)

$50.99

$62.00

In stock
BRAVO COMPANY - AR-15 BCMGUNFIGHTER™ ENHANCED LOWER PARTS KITS BRAVO COMPANY - AR-15 BCMGUNFIGHTER™ ENHANCED LOWER PARTS KITS
5 Stars
(4.5)

$119.95

In stock
DANIEL DEFENSE - AR-15 LOWER PARTS KIT DANIEL DEFENSE - AR-15 LOWER PARTS KIT
5 Stars
(4.8)

$122.00

In stock
Product badge SONS OF LIBERTY GUN WORKS - BLASTER LOWER PARTS STARTER KIT FOR AR-15 SONS OF LIBERTY GUN WORKS - BLASTER LOWER PARTS STARTER KIT FOR AR-15
5 Stars
(4.7)

$57.99

$69.99

In stock
CMMG - AR-15 LOWER PARTS KIT CMMG - AR-15 LOWER PARTS KIT
5 Stars
(4.1)

$56.99

In stock
LMT DEFENSE - LMT .308 LOWER PARTS KIT LMT DEFENSE - LMT .308 LOWER PARTS KIT
5 Stars
(5.0)

$150.30 - $333.00

In stock
Product badge CMMG - GUNBUILDER'S LOWER PARTS KIT FOR .308 AR LOWER CMMG - GUNBUILDER'S LOWER PARTS KIT FOR .308 AR LOWER
5 Stars
(3.0)

$39.99

$49.23

In stock
WILSON COMBAT - AR-15 RECEIVER SMALL PARTS KIT WILSON COMBAT - AR-15 RECEIVER SMALL PARTS KIT
5 Stars
(4.5)

$51.95

In stock
Product badge CMMG - AR-15/M16 ENHANCED REPAIR KIT CMMG - AR-15/M16 ENHANCED REPAIR KIT
5 Stars
(5.0)

$29.99

$36.92

In stock
Product badge SONS OF LIBERTY GUN WORKS - BLASTER GUTS LOWER PARTS KIT W/LIBERTY FIGHTING TRIGGER FOR AR15 SONS OF LIBERTY GUN WORKS - BLASTER GUTS LOWER PARTS KIT W/LIBERTY FIGHTING TRIGGER FOR AR15
5 Stars
(5.0)
Add to cart to see price

In stock
LMT DEFENSE - LMT 5.56MM LOWER PARTS KIT LMT DEFENSE - LMT 5.56MM LOWER PARTS KIT
5 Stars
(0.0)

$141.30 - $322.65

In stock
STRIKE INDUSTRIES - AR-15/M16 LOWER RECEIVER GUNSMITH SPRING KIT STRIKE INDUSTRIES - AR-15/M16 LOWER RECEIVER GUNSMITH SPRING KIT
5 Stars
(3.0)

$8.95 - $95.95

In stock
Product badge LUTH-AR LLC - AR-15 BUILDER KIT LUTH-AR LLC - AR-15 BUILDER KIT
5 Stars
(3.6)
Add to cart to see price

In stock
BATTLE ARMS DEVELOPMENT INC. - AR-15 INVESTMENT CAST ENHANCED LOWER PARTS KIT BATTLE ARMS DEVELOPMENT INC. - AR-15 INVESTMENT CAST ENHANCED LOWER PARTS KIT
5 Stars
(4.0)

$34.95

In stock
ZRO DELTA - AR-15 ELG LOWER PARTS KIT ZRO DELTA - AR-15 ELG LOWER PARTS KIT
5 Stars
(3.9)

$39.99 - $52.99

Select Items In Stock
M & P - M&P AR-15 CUSTOMIZABLE LOWER PARTS KIT M & P - M&P AR-15 CUSTOMIZABLE LOWER PARTS KIT
5 Stars
(4.3)

$37.99

In stock
LUTH-AR LLC - AR-15 LOWER PARTS KIT LUTH-AR LLC - AR-15 LOWER PARTS KIT
5 Stars
(4.6)

$55.92

In stock
ARMASPEC - AR-15 GUN BUILDERS LOWER PARTS KITS STAINLESS .223/5.56 ARMASPEC - AR-15 GUN BUILDERS LOWER PARTS KITS STAINLESS .223/5.56
5 Stars
(3.6)

$67.49

In stock
ALG DEFENSE - AR-15 LOWER PARTS KIT W/ QMS TRIGGER ALG DEFENSE - AR-15 LOWER PARTS KIT W/ QMS TRIGGER
5 Stars
(4.6)

$93.00 - $96.00

In stock
ALG DEFENSE - AR-15 LOWER PARTS KIT W/ ACT TRIGGER ALG DEFENSE - AR-15 LOWER PARTS KIT W/ ACT TRIGGER
5 Stars
(4.8)

$112.99 - $113.00

In stock
ARMASPEC - AR-15 STAINLESS LOWER PARTS KITS .223/5.56 ARMASPEC - AR-15 STAINLESS LOWER PARTS KITS .223/5.56
5 Stars
(3.5)

$71.99

In stock
Product badge LUTH-AR LLC - AR-308 LOWER PARTS KIT LUTH-AR LLC - AR-308 LOWER PARTS KIT
5 Stars
(3.0)
Add to cart to see price

In stock
BATTLE ARMS DEVELOPMENT INC. - AR-15 INVESTMENT CAST COMPLETE ENHANCED LOWER PARTS KIT BATTLE ARMS DEVELOPMENT INC. - AR-15 INVESTMENT CAST COMPLETE ENHANCED LOWER PARTS KIT
5 Stars
(5.0)

$131.95

In stock
Product badge NEXT LEVEL ARMAMENT - MIL-SPEC LOWER PARTS KIT FOR AR-15 NEXT LEVEL ARMAMENT - MIL-SPEC LOWER PARTS KIT FOR AR-15
5 Stars
(0.0)

$55.99

$63.00

In stock
BROWNELLS BUNDLES - BRN-180 LOWER PARTS KIT BROWNELLS BUNDLES - BRN-180 LOWER PARTS KIT
5 Stars
(5.0)

$115.58

Out of Stock
STRIKE INDUSTRIES - AR ENHANCED LOWER RECEIVER PARTS KIT STRIKE INDUSTRIES - AR ENHANCED LOWER RECEIVER PARTS KIT
5 Stars
(4.1)

$75.95

Out of Stock
KAK INDUSTRY LLC. - LOWER PARTS KIT FOR AR-15 KAK INDUSTRY LLC. - LOWER PARTS KIT FOR AR-15
5 Stars
(5.0)

$31.99 - $50.99

Out of Stock
COLT - .223 REM/.5.56MM NATO HIGH WEAR PARTS KIT FOR AR-15/M4 COLT - .223 REM/.5.56MM NATO HIGH WEAR PARTS KIT FOR AR-15/M4
5 Stars
(0.0)

$23.00

Out of Stock
RISE ARMAMENT - OH SH#T SPARE PARTS KIT FOR AR-15 RISE ARMAMENT - OH SH#T SPARE PARTS KIT FOR AR-15
5 Stars
(5.0)

$15.99

Out of Stock
Products:  1  –  32  of 55