Class 3 parts and accessories in Porter, Indiana from Great Lake Firearms. NFA-compatible mounts, hardware, and fittings. Shop online today.

.725 STANDARD THREAD PROTECTOR 5/8-24 PLATED BLACK

$16.75
.725 STANDARD THREAD PROTECTOR 5/8-24 PLATED BLACK
Purchase & earn 17 points!Add to cart

.920 BULL THREAD PROTECTOR 5/8-24 PLATED BLACK

$16.75
.920 BULL THREAD PROTECTOR 5/8-24 PLATED BLACK
Purchase & earn 17 points!Add to cart

1215KM SUPPRESSOR MOUNT FOR DEAD AIR .223 SUPPRESSOR 1/2”X28

$104.50
1215KM SUPPRESSOR MOUNT FOR DEAD AIR .223 SUPPRESSOR 1/2''X28
Purchase & earn 105 points!Add to cart

243 CAL SIDE-BAFFLE BRAKE 4-PORT 1/2-28” W/308 CRUSH WASHER

$198.00
243 CAL SIDE-BAFFLE BRAKE 4-PORT 1/2-28'' W/308 CRUSH WASHER
Purchase & earn 198 points!Add to cart

A2 9MM/5.56X45 COMPATIBLE FLASH HIDER 1/2”X28 NITRIDE BLK

$18.39
A2 9MM/5.56X45 COMPATIBLE FLASH HIDER 1/2''X28 NITRIDE BLK
Purchase & earn 18 points!Add to cart

AAC Ti-RANT 9M HD/Ti-Rant 45 Conversion Piston to M13.5 x 1LH (9mm ONLY)

$59.00
AAC Ti-RANT 9M HD/Ti-Rant 45 Conversion Piston to M13.5 x 1LH (9mm ONLY)
Purchase & earn 59 points!Read more

ALPHA ATLAS ADAPTER 1.125”-28 THREADS BLACK NITRIDE

$76.50
ALPHA ATLAS ADAPTER 1.125''-28 THREADS BLACK NITRIDE
Purchase & earn 77 points!Add to cart

AR .308 6315 FLASH HIDER FOR KEYMO MOUNT 5/8-24

$105.00
AR .308 6315 FLASH HIDER FOR KEYMO MOUNT 5/8-24
Purchase & earn 105 points!Add to cart

AR-10 FLASH SUPPRESSOR MOUNT 5/8”X24 THREAD

$90.00
AR-10 FLASH SUPPRESSOR MOUNT 5/8''X24 THREAD
Purchase & earn 90 points!Add to cart

AR-15 6315 FLASH HIDER FOR KEYMO MOUNT 1/2-28

$105.00
AR-15 6315 FLASH HIDER FOR KEYMO MOUNT 1/2-28
Purchase & earn 105 points!Add to cart

Great Lake Firearms carries Class 3 parts and accessories for customers in Porter, Indiana who need NFA-compliant components. Find mounting hardware, end caps, mounts, and approved fittings to support suppressed builds and regulated setups. Pair these items with AR15 Parts or Gun Parts Kits when assembling compliant systems. For related gear, check AR Upper Parts and Optics to complete a legal, functional package. We help you find the right components and guide you toward compliant, high-quality builds. Shop Class 3 parts online today.