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

SilencerCo Delta Adapter S&W M&P 22 Compact

$37.40
SilencerCo Delta Adapter S&W M&P 22 Compact
Purchase & earn 37 points!Add to cart

RUGGED SUPPRESSORS 3 LUG – ADAPTER OBSIDIAN9 1/2X36

$61.00
RUGGED SUPPRESSORS 3 LUG - ADAPTER OBSIDIAN9 1/2X36
Purchase & earn 61 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

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

G-Outdoors Tactical Suppressor Cover 6″ Multicam

$29.00
G-Outdoors Tactical Suppressor Cover 6" Multicam
Purchase & earn 29 points!Add to cart

.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

SilencerCo 3-Lug Muzzle Device .578×28 .45 cal

$75.65
SilencerCo 3-Lug Muzzle Device .578x28 .45 cal
Purchase & earn 76 points!Add to cart

KEYMO FLASH HIDER 30 CALIBER M14X1LH THREADS BLACK

$70.00
KEYMO FLASH HIDER 30 CALIBER M14X1LH THREADS BLACK
Purchase & earn 70 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.