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

Dead Air Wave Spring for KeyMo and KeyMicro Adapters

$10.00
Dead Air Wave Spring for KeyMo and KeyMicro Adapters
Purchase & earn 10 points!Add to cart

Surefire SOCOM Replacement Shim Kit for SF3P/SFMB/WARCOMP-762 5/8-24

$13.00
Surefire SOCOM Replacement Shim Kit for SF3P/SFMB/WARCOMP-762 5/8-24
Purchase & earn 13 points!Add to cart

Surefire SOCOM Replacement Shim Kit for SF3P/SFMB/WARCOMP-556 1/2-28

$13.00
Surefire SOCOM Replacement Shim Kit for SF3P/SFMB/WARCOMP-556 1/2-28
Purchase & earn 13 points!Add to cart

RUGGED SUPPRESSORS SHIM KIT – 338 CAL 3/4X24/M18X1/M18.5X1

$15.00
RUGGED SUPPRESSORS SHIM KIT - 338 CAL 3/4X24/M18X1/M18.5X1
Purchase & earn 15 points!Add to cart

SilencerCo Thread Protector 1/2×28 with O-Ring Engagement

$16.15
SilencerCo Thread Protector 1/2x28 with O-Ring Engagement
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

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.