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  • GM WARFARE BILLET BARREL
    • GORILLA MACHINING AR 9 Luger 9MM Billet Barrel
    • GORILLA MACHINING AR 15 .224 Valkyrie Billet Barrel
    • GORILLA MACHINING AR-15 .223 Wylde Billet Barrel
    • GORILLA MACHINING AR-15 Marksman 5.56 Nato Billet Barrel
    • GORILLA MACHINING AR-15 .300 AAC Black Out Billet Barrel
    • GORILLA MACHINING AR-15 Mikhail 7.62X39 Billet Barrel
    • GORILLA MACHINING AR-15 .350 legend Billet Barrel
    • GORILLA MACHINING AR-10 Commander .308 Winchester Billet Barrel
    • GORILLA MACHINING AR-10 Commander 6.5 Creedmoor Billet Barrel
    • GORILLA MACHINING AR-15 6.5 Grendel Billet Barrel
    • GORILLA MACHINING AR-15 450 Bushmaster Billet Barrel
  • GM LOWER PARTS
    • GORILLA MACHINING AR-15 LOWER PARTS KIT
    • GORILLA MACHINING AR-15 BUTTSTOCK , BRACES & KITS
    • GORILLA MACHINING AR-15 PISTOL GRIPS,BUFFER , BUFFER TUBE AND PARTS
    • GORILLA MACHINING AR-15/ AR-9 80% LOWER RECEIVER FRAME
    • GORILLA MACHINING AR-15/ AR-9 80% LOWER RECEIVER KITS
  • GM UPPER RECEIVER PARTS
    • GORILLA MACHINING AR-15 5.56/.223 7.62x39 6.5 GRENDAL 450 SOCOM 458 BUSHMASTER ETC BOLT CARRIER GROUP,FIRING PIN AND PARTS
    • GORILLA MACHINING AR-15 M-LOK FREE FLOAT HANDGAURD RAILS
    • GORILLA MACHINING AR-15 HANDGAURD , MIL-SPEC UPPER PARTS , GRIPS AND HAND STOP BARRICADE
    • GORILLA MACHINING AR-15 5.56 & 30 CAL MUZZLE BRAKE AND FLASH HIDER
    • GORILLA MACHINING AR-15 DUST COVERS/FORWARD ASSIST/CHARGING HANDLES
    • GORILLA MACHINING AR-15 GAS TUBE , LOW PROFILE GAS BLOCKS & QUAD GAS BLOCKS
    • GORILLA MACHINING AR-15 FLIP UP SIGHTS & A2 SIGHTS
    • GORILLA MACHINING AR-15 TACTICAL SCOPE AND RED DOT
    • GORILLA MACHINING AR-15 STRIPPED UPPER RECEIVER IN RAW & ANODIZED
    • GORILLA MACHINING AR-15 UPPER KITS ETC
  • GM COMPLETE PISTOL UPPER RECEIVER
    • GORILLA MACHINING AR-9 9MM LUGER UPPER RECEIVER
    • GORILLA MACHINING AR-15 .223 WYLDE MARKSMAN UPPER RECEIVER
    • GORILLA MACHINING AR-15 5.56 NATO MARKSMAN UPPER RECEIVER
    • GORILLA MACHINING AR-15 300 BLK OUT AAC UPPER RECEIVER
    • GORILLA MACHINING AR-15 7.62X39 MIKHAIL UPPER RECEIVER
  • GM COMPLETE RIFLE UPPER RECEIVERS
    • GORILLA MACHINING AR-9 9MM LUGER UPPER RECEIVER
    • GORILLA MACHINING AR-15 .224 VALKYRIE UPPER RECEIVER
    • GORILLA MACHINING AR-15 5.56/.223 MARKSMAN UPPER RECEIVER
    • GORILLA MACHINING AR-15 300 BLK OUT AAC UPPER RECEIVER
    • GORILLA MACHINING AR-15 7.62X39 MIKHAIL UPPER RECEIVER
  • GM PISTOL KITS
    • GORILLA MACHINING AR-15 .223/5.56 PISTOL KIT
    • GORILLA MACHINING AR-15 .300 BLACK OUT PISTOL KIT
    • GORILLA MACHINING AR-9 LUGER 9MM PISTOL KIT
    • GORILLA MACHINING AR-15 7.62X39 PISTOL KIT
  • GM RIFLE KITS
    • GORILLA MACHINING AR-15 .223/5.56 RIFLE KIT
    • GORILLA MACHINING AR-15 .300 BLACK OUT RIFLE KIT
    • GORILLA MACHINING AR-9 LUGER 9MM RIFLE KIT
    • GORILLA MACHINING AR-15 7.62X39 RIFLE KIT
  • GM GLOCK SLIDE PRODUCTS AND ACCESSORIES
    • GORILLA MACHINING GLOCK 17 SLIDE
    • GORILLA MACHINING GLOCK 19 SLIDE
    • GORILLA MACHINING GLOCK 17 UPPER AND LOWER PARTS KIT
    • GORILLA MACHINING GLOCK 19 UPPER AND LOWER PARTS KIT
    • GORILLA MACHINING GLOCK 23 UPPER AND LOWER PARTS KIT
    • GORILLA MACHINING GLOCK 26 UPPER AND LOWER PARTS KIT
    • GORILLA MACHINING GLOCK 17 BARREL
    • GORILLA MACHINING GLOCK 19 BARREL
    • GORILLA MACHINING GLOCK 22 BARREL
    • GORILLA MACHINING GLOCK 23 BARREL
    • GORILLA MACHINING GLOCK 26 BARREL
    • GORILLA MACHINING HANDGUN BARREL COMPENSATOR BRAKES
  • GM AR 10 .308 UPPER PART
    • GORILLA MACHINING AR-10 .308 BOLT CARRIER GROUP,FIRING PIN AND PARTS
    • GORILLA MACHINING AR-10 .308 HANDGAURDS
    • GORILLA MACHINING AR-10 .308 CHARGING HANDLES/DUST COVER/FORWARD ASSIST
    • GORILLA MACHINING AR-10 .308 GAS BLOCK AND GAS TUBE
    • GORILLA MACHINING AR-10 .308 MUZZLE BRAKE AND CRUSH WASHER
    • GORILLA MACHINING AR-10 .308 UPPER RECEIVER
  • GM 308 LOWER ASSEMBLY PART
    • GORILLA MACHINING AR-10 80% LOWER RECEIVER
    • GORILLA MACHINING AR-10 LOWER PARTS KIT
    • GORILLA MACHINING AR-10 BUTTSTOCK , BRACES & KITS
    • GORILLA MACHINING AR-10 PISTOL GRIPS,BUFFER , BUFFER TUBE AND PARTS
  • GM .308 COMPLETE UPPER RECEIVERS
    • GORILLA MACHINING AR-10 .308 WINCHESTER
    • GORILLA MACHINING AR-10 6.5 CREEDMOOR
    • GORILLA MACHINING AR-10 UPPER RECEIVER COMBO
  • GM APPAREL/SWAG
    • GORILLA MACHINING SHIRTS & SWAG
    • GORILLA MACHINING STICKERS , BANNERS & DECALS
  • LEAPERS UTG PRODUCTS
    • UTG AR-15 GAS BLOCK
    • UTG AR-15 BUTTSTOCK , BRACES & KITS
    • UTG AR-15 PICATINNY RAIL , ACCESSORIES AND MOUNTS
    • UTG AR-15 TACTICAL GRIP / ANGLE FOREGRIP
    • UTG AR-15 TOOLS
    • UTG AR-15 MAGAZINES
    • UTG AR-15 SIGHTS
    • UTG AR-15 TACTICAL GUN CASE & VESTS

Top Sellers

Gorilla Machining AR-15 .223/5.56 , 7.62x39 , 300AAC , 9MM , 6.5 Grendel , 350 Legend Complete Lower Parts Assembly kit
Gorilla Machining AR-15 .223/5.56 , 7.62x39 , 300AAC , 9MM , 6.5 Grendel , 350 Legend Complete Lower Parts Assembly kit
$33.99
(69)
Gorilla Machining AR-15 M4A4 Anchor Harvey Stripped Upper Receiver RAW
Gorilla Machining AR-15 M4A4 Anchor Harvey Stripped Upper Receiver RAW
$38.99 $29.99
(48)
Gorilla Machining Glock 19/23/32  Gen 1-3 Non Adjustment Lower Parts Kit Polymer 80 / OEM
Gorilla Machining Glock 19/23/32 Gen 1-3 Non Adjustment Lower Parts Kit Polymer 80 / OEM
$39.99
(12)

New Releases

Gorilla Machining AR-15 9.25
Gorilla Machining AR-15 9.25" Precision Billet Free Float Handguard T-7 7075
$49.99
(0)
UTG® AR15/AR308 Armorer's Multi-Function Combo Wrench , black
UTG® AR15/AR308 Armorer's Multi-Function Combo Wrench , black
$34.95
(0)
UTG® AR15 10 Round Polymer Magazine, .223/5.56
UTG® AR15 10 Round Polymer Magazine, .223/5.56
$10.99
(0)

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Manufacturer

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  2. GM LOWER PARTS

GM LOWER PARTS

"Gorilla Machining has the best source for AR-15 Lower Receiver Assembly Parts. If you are building a stripped lower receiver into a complete rifle or just replacing some old parts, we have everything you need. We have you covered from triggers, disconnector springs, trigger guards, hammer springs, trigger springs, safety selectors, detents, bolt catches, roll pins, build kits, part kits, magazines, stocks, grips, and still so much more. A high-quality lower parts kit is needed to assemble your lower so ensure you have one accessible to take advantage of our lower receiver parts. Take your time browsing through our varied catalog that is brimming with top-performing components and accessories for your rifles. With years of manufacturing experience under our belts, we are excited to provide a specialized selection of barrels and receivers made directly in the United States. See the quality for yourself and shop American-tough products from Gorilla Machining today. You will be glad you did! If you have any questions, we are here to be of service. Contact us with your inquiry by phone or email, and we will get back to you with customer service you can count on. Our representatives are professional and friendly, and we will be happy to help you. "
  • GORILLA MACHINING AR-15 LOWER PARTS KIT GORILLA MACHINING AR-15 LOWER PARTS KIT
  • GORILLA MACHINING AR-15 BUTTSTOCK , BRACES & KITS GORILLA MACHINING AR-15 BUTTSTOCK , BRACES & KITS
  • GORILLA MACHINING AR-15 PISTOL GRIPS,BUFFER , BUFFER TUBE AND PARTS GORILLA MACHINING AR-15 PISTOL GRIPS,BUFFER , BUFFER TUBE AND PARTS
  • GORILLA MACHINING AR-15/ AR-9 80% LOWER RECEIVER FRAME GORILLA MACHINING AR-15/ AR-9 80% LOWER RECEIVER FRAME
  • GORILLA MACHINING AR-15/ AR-9 80% LOWER RECEIVER KITS GORILLA MACHINING AR-15/ AR-9 80% LOWER RECEIVER KITS
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