CMMG AR-15 Parts and Accessories
CMMG was established in 2002, when John, Jeff, Gretchen, and Stephanie Overstreet made the decision to create a quality AR rifle that can be afforded by everyone. CMMG is constantly looking for new ways to improve our products, processes, and company at large. CMMG guarantees its products against defects in material or workmanship for the life of the product. CMMG Inc. will repair, replace or substitute any product(s) if a defect in material or workmanship is found.
- Conversion Kits - CMMG (13)
- Barrels - CMMG (9)
- Bolt Carrier Groups - CMMG (8)
- Lower Receiver Parts - CMMG (8)
- Magazines - CMMG (7)
- Uppers & Parts - CMMG (5)
- Buttstocks - CMMG (4)
- Muzzle Devices - CMMG (2)
- Charging Handles - CMMG (1)
- Buffer Tube Parts - CMMG (1)
- AR-15 Build Kits and Assemblies - CMMG (1)
- CMMG - .22lr (14)
- CMMG - .308 (7)
- CMMG - 9mm (6)
- CMMG - 5.7x28 (5)
- CMMG - 6mm ARC (3)
- CMMG - .350 Legend (3)
- CMMG - .300 Blackout (2)
- CMMG - .458 SOCOM (1)
- CMMG - .223/5.56 (1)
- CMMG - 6.5 Grendel (1)
- CMMG Inc - 6.5 Creedmoor (1)
- CMMG - Black (8)
- CMMG Inc - Stainless (2)
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CMMG Mk3 .308 HD Extended Pivot and Takedown Pins
CMMG Mk3 .308 HD Extended Pivot and Takedown Pins Looking for improved pins for your CMMG MK3 platform or LR308 patterned AR-10 rifle? Look no further than the Mk3 HD... -
CMMG AR-15 Ejection Port Cover Kit
Includes AR-15 ejection port, rod, and spring. Perfect for finishing a stripped upper receiver. -
CMMG .308 GunBuilder Lower Receiver Parts Kit- No Grip or Fire Control Group
CMMG .308 GunBuilder Lower Receiver Parts Kit- No Grip or Fire Control Group The CMMG® Mk3 Gunbuilders kit is a great kit for anyone looking to build their AR-10/LR-308 lower.... -
CMMG AR-15 Zeroed Lower Parts Kit with Ambi Safety Selector
Color-Coded Lower Parts Kit For Easy Assembly for AR-15 The CMMG AR-15 Zeroed Lower Parts Kit is a complete package consisting of high-quality USA-made parts to finish off an Mk4/AR15... -
CMMG AR-15 Zeroed Muzzle Brake w/ Crush Washer – .223/5.56 NATO – 1/2×28
Maximize Shooting Experience with a CMMG Muzzle Brake The CMMG AR-15 Zeroed Muzzle Brake is the perfect muzzle device for AR-15 builds chambered in popular calibers like 5.56mm/.223, .224 Valkyrie,... -
CMMG .22LR AR15 Barrel and Bolt Conversion Kit – Multiple Lengths
CMMG .22LR AR15 Barrel and Bolt Conversion Kit This kit is designed to help you convert your existing upper to a dedicated .22LR quickly and easily. With the barrel and...3 Options -
CMMG 16 Inch 350 Legend AR 15 Barrel – 1:16 Twist – Carbine
Legendary CMMG Quality for the New 350 Cartridge CMMG makes some of the best components for the AR-15 on the market. This barrel for the new .350 Legend cartridge is... -
CMMG AR-15 Forward Assist Kit – Forward Assist Assembly, Spring, and Pin
CMMG AR-15 Forward Assist Kit The CMMG Forward Assist Kit is a reliable option for all your AR custom build. This kit comes equipped with a forward assist assembly, spring,... -
CMMG AR-15 .22 LR Conversion Kit w/ Charging Handle & Forward Assist + One...
Spend a day at the range without spending a fortune! The CMMG Echo Stainless 22LR Conversion Kit with 1 Magazine, Charging Handle, and Forward Assist Adapter This CMMG .22LR conversion... -
CMMG 16.1 Inch MKGS Barrel & Radial Delayed BCG Kit for AR15 – 9MM
Radial Delayed BCG Kit For Lesser Recoil And Lighter Performance The CMMG MKGS Barrel and BCG Kit will allow you to build a Pistol Caliber Carbine using a Patent Pending... -
CMMG 6.5 Grendel/6mm ARC Bolt Carrier Group for AR-15
CMMG 6.5 Grendel/6mm ARC Bolt Carrier Group This bolt carrier group from CMMG runs, whether your gun is set up for 6.5 Grendel or 6mm ARC. These cartridges are slightly different,... -
CMMG 300 AAC Blackout 16.1″ Barrel – Carbine Length 1:7 Twist – 4140 CrMo...
CMMG .300 BLK 16 Inch Nitride Barrel Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. Specifications: 16.1"... -
CMMG .300 Blackout 16.1″ AR 15 Barrel – Carbine Length 1:7 Twist – 416...
Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. Specifications: 16.1? Medium Taper Profile 416 Stainless Steel Bead... -
CMMG AR 15 Bolt Carrier Group – Black – 55BA419
The CMMG 55BA419 BOLT CARRIER GROUP is a Mil-Spec part made for the M16 in 5.56 caliber. This also works great for the AR-15 in .223/5.56! (M16 bolt carriers are... -
CMMG 5.7x28mm AR Conversion Magazine – 40 Round
Convert Your AR to Shoot 5.7x28mm Ammunition The CMMG 5.7x28mm AR Conversion Magazine makes it possible to shoot 5.7x28mm ammunition from any standard AR15 lower receiver when paired with CMMG... -
CMMG Enhanced Pistol Buffer Tube Kit with Ambidextrous Sling End Plate
Combine this kit with your choice of lower parts kit to complete your pistol lower group. Includes: CMMG Pistol Receiver Extension Carbine Buffer Assembly Carbine Action Spring -
CMMG .22 LR Magazine Speed Loader
No More Sore Thumbs! This Mag Loader makes it much easier and quicker to load your CMMG 22 LR mags. -
CMMG AR-15 RipStock – 5-Position Compact Stock Assembly – Receiver Extension & Stock Kit
Innovative 5-Position CQB ButtStock For Extremely Fast Deployment The CMMG AR-15 RipStock - 5-Position Compact Stock Assembly is a revolutionary, retractable buttstock innovatively designed to enable operators to quickly adjust... -
CMMG AR-10 Zeroed Muzzle Brake w/ Crush Washer – .308 Win/7.62mm – 5/8×24
Maximize Shooting Experience with a CMMG Muzzle Brake The CMMG AR-10 Zeroed Muzzle Brake is the perfect muzzle device for AR-10 builds chambered in .308 Win and 7.62x39mm. This muzzle... -
CMMG .308 Lower Receiver Parts Kit with Ambidextrous Selector
All the parts you need to get started on you next .308 build - also includes a CMMG Ambi Selector. Combine this kit with a buttstock kit to complete your... -
CMMG 5.7x28mm AR Conversion Magazine – 10 Round
Convert Your AR to Shoot 5.7x28mm Ammunition The CMMG 5.7x28mm AR Conversion Magazine makes it possible to shoot 5.7x28mm ammunition from any standard AR15 lower receiver when paired with CMMG... -
CMMG .308 MK3 Bolt Carrier Group
Complete .308 Mk3 bolt carrier group - includes a complete bolt, properly staked gas key, firing pin, cam pin and firing pin retaining pin. Bolt is precision machined from 9310... -
CMMG .22 LR AR 15 Barrel Collar Assembly – 22ARC
Use this collar to convert your CMMG drop in .22LR conversion kit to a dedicated bolt group. Collar assembly is designed to interface with CMMG .22lr barrels. -
CMMG MK57 5.7×28 8 Inch Radial Delayed Blowback AR 15 Barrel and BCG Kit
8 Inch 5.7x28mm Conversion Kit with Lightweight BCG The 5.7x28mm round, now available to convert your AR-15 to a high-velocity, low-recoil PDW. CMMG's Radial-Delayed Blowback system makes this kit incredibly...
CMMG was established in 2002, when John, Jeff, Gretchen, and Stephanie Overstreet made the decision to create a quality AR rifle that can be afforded by everyone. CMMG is constantly looking for new ways to improve our products, processes, and company at large. CMMG guarantees its products against defects in material or workmanship for the life of the product. CMMG Inc. will repair, replace or substitute any product(s) if a defect in material or workmanship is found.