AR15 parts in Porter, Indiana at Great Lake Firearms. Barrels, BCGs, handguards, and stocks to complete your build. Shop online today.

BLEM PISTOL LOWER REC W/ RECEIVER EXTENSION BLACK

$450.00
BLEM PISTOL LOWER REC W/ RECEIVER EXTENSION BLACK
Purchase & earn 450 points!Add to cart

BEAR CREEK ARSENAL 300 B/O COMPLETE UPPER 10.” BRL 1:7 TWIST PISTOL LENGTH GAS MLOK

$240.00
BEAR CREEK ARSENAL 300 B/O COMPLETE UPPER 10." BRL 1:7 TWIST PISTOL LENGTH GAS MLOK
Purchase & earn 240 points!Add to cart

FAXON AR-15 X-TRA LITE – RECEIVER SET OD GREEN STRIPPED

$286.00
FAXON AR-15 X-TRA LITE - RECEIVER SET OD GREEN STRIPPED
Purchase & earn 286 points!Add to cart

FAXON AR-15 X-TRA LITE – RECEIVER SET TITANIUM STRIPPED

$286.00
FAXON AR-15 X-TRA LITE - RECEIVER SET TITANIUM STRIPPED
Purchase & earn 286 points!Add to cart

FAXON AR-15 X-TRA LITE – RECEIVER SET STRIPPED

$276.00
FAXON AR-15 X-TRA LITE - RECEIVER SET STRIPPED
Purchase & earn 276 points!Add to cart

ARMASPEC STEALTH RECOIL SPRING – H GEN 4 BUFFER KIT 3.8 OZ

$108.89
ARMASPEC STEALTH RECOIL SPRING - H GEN 4 BUFFER KIT 3.8 OZ
Purchase & earn 109 points!Add to cart

BEAR CREEK ARSENAL 5.56 NATO COMPLETE UPPER 16″ BRL 1:7 TWIST MID-LENGTH GAS MLOK W/ BCG & CHARGING

$255.00
BEAR CREEK ARSENAL 5.56 NATO COMPLETE UPPER 16" BRL 1:7 TWIST MID-LENGTH GAS MLOK W/ BCG & CHARGING
Purchase & earn 255 points!Add to cart

BEAR CREEK ARSENAL 5.56 NATO COMPLETE UPPER 10.” BRL 1:7 TWIST CARBINE LENGTH GAS MLOK

$244.00
BEAR CREEK ARSENAL 5.56 NATO COMPLETE UPPER 10." BRL 1:7 TWIST CARBINE LENGTH GAS MLOK
Purchase & earn 244 points!Add to cart

BEAR CREEK ARSENAL 300 B/O COMPLETE UPPER 7.5″ BRL 1:7 TWIST PISTOL LENGTH GAS MLOK

$232.00
BEAR CREEK ARSENAL 300 B/O COMPLETE UPPER 7.5" BRL 1:7 TWIST PISTOL LENGTH GAS MLOK
Purchase & earn 232 points!Add to cart

COLT LE6940CK UPPER RECEIVER – CONVERSION KIT 5.56 16.1″

$1,059.00
COLT LE6940CK UPPER RECEIVER - CONVERSION KIT 5.56 16.1"
Purchase & earn 1,059 points!Add to cart

M4 LE6920EPR UPPER GROUP 16IN WITH BCG

$1,042.00
M4 LE6920EPR UPPER GROUP 16IN WITH BCG
Purchase & earn 1,042 points!Read more

LANTAC MIL SPEC AR15 FIELD – REPAIR KIT

$18.99
LANTAC MIL SPEC AR15 FIELD - REPAIR KIT
Purchase & earn 19 points!Add to cart

M4 LE6921 UPPER GROUP 14.5IN WITH BCG AND SIGHTS

$846.00
M4 LE6921 UPPER GROUP 14.5IN WITH BCG AND SIGHTS
Purchase & earn 846 points!Add to cart

Rise Armament RA-1010 Low-Mass Bolt Carrier Group .223/5.56 Nickel Boron

$249.99
Rise Armament RA-1010 Low-Mass Bolt Carrier Group .223/5.56 Nickel Boron
Purchase & earn 250 points!Add to cart

MK12 MOD-H .223/5.56 16” BBL COMPLETE UPPR RCVR BLK

$1,662.00
MK12 MOD-H .223/5.56 16'' BBL COMPLETE UPPR RCVR BLK
Purchase & earn 1,662 points!Read more

Rival Arms Extended Magazine Release for Glock Model 42

$20.00
Rival Arms Extended Magazine Release for Glock Model 42
Purchase & earn 20 points!Add to cart

At Great Lake Firearms, our AR15 Parts selection helps builders and armorers in Porter, Indiana finish reliable, accurate rifles. Find barrels, handguards, bolt carrier groups, stocks, and small parts to tune performance. Combine these with AR Lower Parts, AR Upper Parts, or complete AR Lower Parts Kits for a full build. Browse compatible Rifle Magazines and Optics to finish your setup. We stock parts from trusted makers so your rifle runs smoothly at the range or in the field. Shop parts and accessories online today.