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Parts Kits

Browse our selection of gun parts kits. An AR-15 lower parts kit has every spring, pin, detent and control to finish a stripped lower, with or without the trigger group and grip; build kits add the upper half; and pistol kits bundle the springs and controls for a refresh.

Other Parts

Barrels 1,652 Grips 1,343 Sights 1,167 Stocks 1,153 Choke Tubes 920 Triggers 782 Handguards 652 Upper Receivers 543 Buffers & Buffer Tubes 356 Rails, Mounts & Adapters 349 All Parts
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Showing 1–24 of 336 products
Ruger RUG AR Buffer Tube KIT
Ruger
RUG AR Buffer Tube KIT
$54.95 $32.07 41% off
CMC Triggers AR-15 Lower Parts Kit
CMC Triggers
AR-15 Lower Parts Kit
$35.99
Price shown in cart
Heckler And Koch (HK Usa) Conversion Kit Pistol Black Steel
Heckler And Koch (HK Usa)
Conversion Kit Pistol Black Steel
$107.99 $76.03 Save $31
CMMG Ejection Port Cover Black 6061-T6 Aluminum, Fits AR-15
CMMG
Ejection Port Cover Black 6061-T6 Aluminum, Fits AR-15
$9.95 $7.55 24% off
Rise Armament Premium Lower Parts Kit Black
Rise Armament
Premium Lower Parts Kit Black
$129.99
Price shown in cart
Luth-AR Lower Parts Kit Builder AR Platform 308 Cal
Luth-AR
Lower Parts Kit Builder AR Platform 308 Cal
$44.17
Price shown in cart
CMMG Zeroed Lower Parts KIT
CMMG
Zeroed Lower Parts KIT
$89.95 $67.08 25% off
Charles Daly Chiappa X-Caliber Set
Charles Daly Chiappa
X-Caliber Set
$410.00 $309.58 Save $100
CMMG Zeroed LPK MK3 Low stock
CMMG
Zeroed LPK MK3
$99.99 $73.75 26% off
LanTac USA LLC M-Spec Lower Parts Kit
LanTac USA LLC
M-Spec Lower Parts Kit
$43.99
Price shown in cart
Bravo Company Mfg. Enhanced Gunfighter Lower Parts Kit AR-15
Bravo Company Mfg.
Enhanced Gunfighter Lower Parts Kit AR-15
$119.95
Price shown in cart
CMMG Gun Builders Lower Parts Kit Black
CMMG
Gun Builders Lower Parts Kit Black
$30.51
Springfield Armory Hellcat 3.80" Threaded 9mm Luger With Self-Indexing Compensator, Black Melonite
Springfield Armory
Hellcat 3.80" Threaded 9mm Luger With Self-Indexing Compensator, Black Melonite
$199.99 $121.53 Save $78
KAK Industry KAK AR-15 Complete LPK
KAK Industry
KAK AR-15 Complete LPK
$51.30
Price shown in cart
Wilson Combat Recoil Spring 308/7.62mm AR15/M16 Silver
Wilson Combat
Recoil Spring 308/7.62mm AR15/M16 Silver
$5.95
Price shown in cart
American Built Arms Company AB Arms AR-15 Small Parts KIT
American Built Arms Company
AB Arms AR-15 Small Parts KIT
$18.23
Aim Sports Lower Parts Kit AR-15 Black
Aim Sports
Lower Parts Kit AR-15 Black
$46.17
Armaspec AR10 GUN Builders KIT BLK
Armaspec
AR10 GUN Builders KIT BLK
$86.39
Price shown in cart
Armaspec Spare Parts KIT
Armaspec
Spare Parts KIT
$14.39
Price shown in cart
Armaspec ARM150-BLU AR10 GUN Builders ST KIT
Armaspec
ARM150-BLU AR10 GUN Builders ST KIT
$86.39
Price shown in cart
Armaspec ARM150-RED AR10 GUN Builders ST KIT
Armaspec
ARM150-RED AR10 GUN Builders ST KIT
$86.39
Price shown in cart
Armaspec Superlight Gun Builders Build Kit Black
Armaspec
Superlight Gun Builders Build Kit Black
$71.99
Price shown in cart
Armaspec Superlight GUN Builder KIT 223
Armaspec
Superlight GUN Builder KIT 223
$71.99
Price shown in cart
Armaspec Superlight Gun Builders Build Kit
Armaspec
Superlight Gun Builders Build Kit
$71.99
Price shown in cart

We stock Timber Creek Outdoors, TacFire, CMMG and Sig Sauer. Start the build with a lower receiver, and find single replacement parts in springs, pins and small parts.