Shop AR upper parts in Porter, Indiana at Great Lake Firearms. Find receivers, handguards, and bolts for precision builds. Order AR parts online today.

FN BARREL SCAR 20S 308WIN 20″

$1,699.00
FN BARREL SCAR 20S 308WIN 20"
Purchase & earn 1,699 points!Read more

FN BARREL SCAR 17S 308WIN 13″

$1,499.00
FN BARREL SCAR 17S 308WIN 13"
Purchase & earn 1,499 points!Read more

FN BARREL SCAR 16S 223REM 10″

$1,299.00
FN BARREL SCAR 16S 223REM 10"
Purchase & earn 1,299 points!Read more

POF USA RENEGADE+ UPPER 5.56 16.5″ BLK

$1,192.00
POF USA RENEGADE+ UPPER 5.56 16.5" BLK
Purchase & earn 1,192 points!Add to cart

308 WINCHESTER 1-10 TWIST 18” CARBON FIBER BARREL

$999.00
308 WINCHESTER 1-10 TWIST 18'' CARBON FIBER BARREL
Purchase & earn 999 points!Add to cart

308 WINCHESTER 1-10 TWIST 20” CARBON FIBER BARREL

$999.00
308 WINCHESTER 1-10 TWIST 20'' CARBON FIBER BARREL
Purchase & earn 999 points!Read more

308 WINCHESTER 1-10 TWIST 16” CARBON FIBER BARREL

$999.00
308 WINCHESTER 1-10 TWIST 16'' CARBON FIBER BARREL
Purchase & earn 999 points!Read more

6.5 GRENDEL 1-8 TWIST 18” CARBON FIBER BARREL

$999.00
6.5 GRENDEL 1-8 TWIST 18'' CARBON FIBER BARREL
Purchase & earn 999 points!Read more

300 AAC BLACKOUT 1-7 TWIST 12.5” CARBON FIBER BARREL

$999.00
300 AAC BLACKOUT 1-7 TWIST 12.5'' CARBON FIBER BARREL
Purchase & earn 999 points!Read more

MODERN PRECISION SA CHASSIS W/14” HANDGUARD BLACK

$972.00
MODERN PRECISION SA CHASSIS W/14'' HANDGUARD BLACK
Purchase & earn 972 points!Add to cart

6.5 CREEDMOOR 1-8 TWIST 24” CARBON FIBER SENDERO BARREL

$939.00
6.5 CREEDMOOR 1-8 TWIST 24'' CARBON FIBER SENDERO BARREL
Purchase & earn 939 points!Add to cart

LMT MWS 6.5 CREEDMOOR 20” RIFLE LENGTH BARREL BLACK

$852.30
LMT MWS 6.5 CREEDMOOR 20'' RIFLE LENGTH BARREL BLACK
Purchase & earn 852 points!Read more

LMT MWS LIGHTWEIGHT 7.62X51 NATO 13.5” CARBINE BBL BLK

$705.60
LMT MWS LIGHTWEIGHT 7.62X51 NATO 13.5'' CARBINE BBL BLK
Purchase & earn 706 points!Add to cart

LMT MWS LIGHTWEIGHT 7.62X51 NATO 16” CARBINE LENGTH BBL BLK

$705.60
LMT MWS LIGHTWEIGHT 7.62X51 NATO 16'' CARBINE LENGTH BBL BLK
Purchase & earn 706 points!Add to cart

LMT MWS 7.62X51 NATO 13.5” CARBINE LENGTH BARREL BLACK

$627.30
LMT MWS 7.62X51 NATO 13.5'' CARBINE LENGTH BARREL BLACK
Purchase & earn 627 points!Add to cart

LMT MWS 7.62X51 NATO 16” CARBINE LENGTH BARREL BLACK

$627.30
LMT MWS 7.62X51 NATO 16'' CARBINE LENGTH BARREL BLACK
Purchase & earn 627 points!Add to cart

FULL-AUTO ENHANCED 5.56MM BOLT CARRIER GROUP BLACK

$553.50
FULL-AUTO ENHANCED 5.56MM BOLT CARRIER GROUP BLACK
Purchase & earn 554 points!Read more

LMT MONOLITHIC 5.56X45 NATO 14.5” MID LENGTH BBL BLACK

$538.20
LMT MONOLITHIC 5.56X45 NATO 14.5'' MID LENGTH BBL BLACK
Purchase & earn 538 points!Add to cart

LMT MONOLITHIC 5.56X45 NATO 16” MID LENGTH BBL BLACK

$538.20
LMT MONOLITHIC 5.56X45 NATO 16'' MID LENGTH BBL BLACK
Purchase & earn 538 points!Read more

LMT MONOLITHIC 300 AAC BLACKOUT 10.5” PISTOL LENGTH BBL BLK

$538.20
LMT MONOLITHIC 300 AAC BLACKOUT 10.5'' PISTOL LENGTH BBL BLK
Purchase & earn 538 points!Read more

Enhance your rifle’s accuracy with precision AR Upper Parts from Great Lake Firearms. Our Porter, Indiana shop carries upper receivers, charging handles, bolt carrier groups, and handguards built for reliable function and tight tolerances. Pair them with AR Lower Parts or complete AR Lower Parts Kits for a perfect match. Explore AR15 Parts and Optics to finish your build with accuracy and style. Get dependable AR components from trusted brands—shop online today.