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

.570 PISTOL BARREL TREAD PROTECTOR 1/2-28 PLATED BLACK

$16.25
.570 PISTOL BARREL TREAD PROTECTOR 1/2-28 PLATED BLACK
Purchase & earn 16 points!Add to cart

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

$16.25
.725 STANDARD THREAD PROTECTOR 5/8-24 PLATED BLACK
Purchase & earn 16 points!Add to cart

.920 BULL THREAD PROTECTOR 1/2-28 PLATED BLACK

$16.25
.920 BULL THREAD PROTECTOR 1/2-28 PLATED BLACK
Purchase & earn 16 points!Add to cart

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

$16.25
.920 BULL THREAD PROTECTOR 5/8-24 PLATED BLACK
Purchase & earn 16 points!Add to cart

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

$74.99
AAC Ti-RANT 9M HD/Ti-Rant 45 Conversion Piston to M13.5 x 1LH (9mm ONLY)
Purchase & earn 75 points!Add to cart

AK- 47 WOLVERINE THREAD INSERT 24MM RH BULGARIAN KRINKOV

$64.00
AK- 47 WOLVERINE THREAD INSERT 24MM RH BULGARIAN KRINKOV
Purchase & earn 64 points!Add to cart

Area 419 SiCo Charlie/Saker Suppressor Mount Adapter with Wrench

$84.00
Area 419 SiCo Charlie/Saker Suppressor Mount Adapter with Wrench
Purchase & earn 84 points!Add to cart

Area 419 Sidewinder Suppressor Mount Adapter SilencerCo Omega with Wrench

$92.00
Area 419 Sidewinder Suppressor Mount Adapter SilencerCo Omega with Wrench
Purchase & earn 92 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.