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

Showing 1–20 of 564 resultsSorted by latest

BIG BORE .458 SOCOM 16” 1-14 GUNNER CONTOUR BBL NITRIDE

$257.60
BIG BORE .458 SOCOM 16” 1-14 GUNNER CONTOUR BBL NITRIDE
Purchase & earn 258 points!Add to cart

FIRING PIN FOR AR-15

$12.34
FIRING PIN FOR AR-15
Purchase & earn 12 points!Add to cart

7.62 CAL CLOSED TINE FLASH HIDER 5/8X24 BLACK

$84.00
7.62 CAL CLOSED TINE FLASH HIDER 5/8X24 BLACK
Purchase & earn 84 points!Add to cart

PROOF RESEARCH BARREL PR15 PXT CF 6ARC 18″

$1,149.00
PROOF RESEARCH BARREL PR15 PXT CF 6ARC 18"
Purchase & earn 1,149 points!Read more

PROOF RESEARCH BARREL PR15 PXT CF 6ARC 14.5″

$1,149.00
PROOF RESEARCH BARREL PR15 PXT CF 6ARC 14.5"
Purchase & earn 1,149 points!Read more

ALEXANDER AR15 UPPER HUNTER – 6.5 GRENDEL 18″ BLACK

$827.00
ALEXANDER AR15 UPPER HUNTER - 6.5 GRENDEL 18" BLACK
Purchase & earn 827 points!Add to cart

ARKUS MIL SPEC RIFLE ADJUSTABLE STOCK FOR AR-15/308

$45.00
ARKUS MIL SPEC RIFLE ADJUSTABLE STOCK FOR AR-15/308
Purchase & earn 45 points!Add to cart

ASCENT 22 ARC COMPLETE UPPER RECEIVER 16” GUNNER BBL BLACK

$621.00
ASCENT 22 ARC COMPLETE UPPER RECEIVER 16'' GUNNER BBL BLACK
Purchase & earn 621 points!Add to cart

16” S2W CARBINE LENGTH 300 BLK BARREL, 1-8 TWIST

$339.00
16'' S2W CARBINE LENGTH 300 BLK BARREL, 1-8 TWIST
Purchase & earn 339 points!Add to cart

MATCH 223 WYLDE 16” 1-8 HEAVY FLUTED CONTOUR BBL NITRIDE

$285.20
MATCH 223 WYLDE 16'' 1-8 HEAVY FLUTED CONTOUR BBL NITRIDE
Purchase & earn 285 points!Add to cart

AR15 12.5” 300BLK MR BARREL

$191.00
AR15 12.5'' 300BLK MR BARREL
Purchase & earn 191 points!Read more

FAXON AR-15 FORGED RECEIVER – SET STRIPPED

$184.00
FAXON AR-15 FORGED RECEIVER - SET STRIPPED
Purchase & earn 184 points!Add to cart

CLOAK INDUSTRIES MFR 56 BELT – FED UPPER 5.56 NATO FDE

$4,837.00
CLOAK INDUSTRIES MFR 56 BELT - FED UPPER 5.56 NATO FDE
Purchase & earn 4,837 points!Read more

CLOAK INDUSTRIES MFR 56 BELT – FED UPPER 5.56 NATO BLACK

$4,577.00
CLOAK INDUSTRIES MFR 56 BELT - FED UPPER 5.56 NATO BLACK
Purchase & earn 4,577 points!Read more

5.56X45 NATO 16” 1-8 GUNNER BBL W/PINNED GAS BLOCK NITRIDE

$216.20
5.56X45 NATO 16'' 1-8 GUNNER BBL W/PINNED GAS BLOCK NITRIDE
Purchase & earn 216 points!Add to cart

BCM AR-15 14.5” ENHANCED LIGHTWEIGHT BARREL ASSEMBLY

$372.00
BCM AR-15 14.5'' ENHANCED LIGHTWEIGHT BARREL ASSEMBLY
Purchase & earn 372 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.