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CMMG, Inc.

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7 reviews
$250.99 $279.95

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 kit allows the use of inexpensive .22LR caliber rim-fire ammo in your AR15. You can install this in 30 seconds, but just removing the standard bolt/carrier group from your AR and replacing...

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7 reviews
$74.99

Color coded bags and an easy-to-use parts list will save you time and frustration with this excellent Lower Parts Kit (LPK) for AR-15.   It includes a pistol grip, fire controls and pins necessary to complete stripped lower - everything but the stock and the lower receiver. All parts are Mil-spec and well packaged. The kit includes: Bolt catchBolt catch plungerBolt...

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7 reviews
$232.99 $259.95

Spend a day at the range without spending a fortune! The CMMG Stainless Steel 22LR Conversion Kit with 3 Magazines. This CMMG .22LR conversion kit allows the use of inexpensive .22LR caliber rim-fire ammo in your AR15. You can install this in 30 seconds, but just removing the standard bolt/carrier group from your AR and replacing with the the included...

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3 reviews
$20.99 $23.95

The Anti Jam Charging Handle for the CMMG 22LR Conversions prevents spent casings from jamming between the charging handle and the bolt. These types of jams are not frequent, but can happen with the .22 Caliber kits.  The groove on the bottom of the charging handle is much more shallow compared to a standard AR-15 handle.

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6 reviews
$232.99 $259.95

This kit is great for states that place a limit on magazine capacity. Spend a day at the range without spending a fortune! The CMMG Stainless Steel 22LR Conversion Kit with 3 ten round Magazines. This CMMG .22LR conversion kit allows the use of inexpensive .22LR caliber rim-fire ammo in your AR15. You can install this in 30 seconds, but just removing...

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No reviews
$174.49 $199.95

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 Blasted Finish 1:7 Twist 5.56×45 NATO Chamber Threaded 1/2-28 Midlength gas port .750″ Gas Journal

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No reviews
$205.99 $229.95

Spend a day at the range without spending a fortune! The CMMG Stainless Steel 22LR Conversion Kit with 1 Magazine. This CMMG .22LR conversion kit allows the use of inexpensive .22LR caliber rim-fire ammo in your AR15. You can install this in 30 seconds, but just removing the standard bolt/carrier group from your AR and replacing with the the included...

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No reviews
$170.99 $189.95

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″  Heavy Taper Profile 4140 Chrome Moly Salt Bath Nitride Finish inside and out 1:7 Twist 5.56×45 NATO Chamber Threaded 1/2-28 Midlength gas port .936″ Gas Journal

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2 reviews
$214.99 $239.95

This kit is great for states that place a limit on magazine capacity. Spend a day at the range without spending a fortune! The CMMG Stainless Steel 22LR Conversion Kit with 1 ten round Magazine. This CMMG .22LR conversion kit allows the use of inexpensive .22LR caliber rim-fire ammo in your AR15. You can install this in 30 seconds, but just...

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No reviews
$241.99 $274.95

Perfect for building your custom .308 upper group. Comes with properly installed barrel extension. All barrel sub-assemblies are properly headspaced. Specifications: 18″ Heavy Taper Profile 416 Stainless Steel Bead Blasted Finish 1:10 Twist 308 WIN Chamber Threaded 5/8-24 Rifle Length Gas Port .936″ Gas Journal

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2 reviews
$24.99 $27.95

This kit is intended for areas that have magazine-capacity restrictions. This CMMG .22 LR AR15 magazine works with CMMG .22 conversion kits. It is made of black polymer, and holds 25 rounds.  Same size as a standard curved USGI magazine. Easily disassembled with 6 hex screws. Specifications: 10 Round Capacity.22 Long RifleBlack Polymer Finish

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No reviews
$168.49 $189.95

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″  M4 Profile 4140 Chrome Moly Salt Bath Nitride Finish inside and out 1:7 Twist 5.56×45 NATO Chamber Threaded 1/2-28 Carbine length gas port .750″ Gas Journal

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No reviews
$1,021.99 $1,099.95

The .308 Mk3 CBR Upper Group features a 16″ nitrided 416 stainless steel medium taper profile barrel in 308 WIN. The Mk3 CBR is equipped with CMMG’s own SV muzzle brake and RKM15 KeyMod hand guard. Specifications: Caliber: 308 WIN Barrel: 16.1” 1:10 twist, medium tapered, 416SS, SBN Muzzle: CMMG SV brake, threaded 5/8-24 Hand Guard: CMMG RKM15 Receivers: Billet...

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No reviews
$49.99

The CMMG Gun builders kit includes most of the necessary parts to build up your lower group while excluding the commonly upgraded parts. Does not include Trigger Guard, Fire Control Group, and pistol grip. This kit offers an economical way to get all the small pieces needed for an AR-15 lower, without wasting money on the parts you won't use. CMMG...

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No reviews
$941.99 $999.95

The Mk3 is the perfect 308 WIN Upper Group for the tree stand or target range. The Mk3 utilizes an 18″ 416 stainless steel heavy taper barrel, and CMMG’s RKM15 KeyMod hand guard. Each Upper Group is covered by CMMG’s lifetime quality guarantee. Caliber: 308 WIN Barrel: 18” stainless steel 1:10 twist heavy taper profile Muzzle: A2 compensator, threaded 5/8-24 Hand...

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No reviews
$257.85 $311.94

9mm M4 16" Barrel Assembly Specifications: - 16" 9mm M4 Profile AR-15 Barrel - Carbine Gas Port Works with a standard AR-15 upper.

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No reviews
$20.49

Stainless steel gas tube for AR15 midlength length gas system. Includes installation roll pin.

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No reviews
$58.49

The CMMG Mk3 .308 GunBuilders kit includes most of the necessary parts to build up your lower group except the commonly upgraded parts. Does not include Fire Control Group, and pistol grip. Compatible with CMMG Mk3 Lowers and most LR308 type lowers. All parts meet or excede mil-spec.

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2 reviews
$24.99 $27.95

This CMMG .22 LR AR15 magazine works with CMMG .22 conversion kits. It is made of black polymer, and holds 25 rounds.  Same size as a standard curved USGI magazine. Easily disassembled with 6 hex screws. Specifications: 25 Round Capacity.22 Long RifleBlack Polymer Finish

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No reviews
$29.99

This quick upgrade replaces your standard safety selector to accommodate left and right handed shooters. All parts meet or excede mil-spec.

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No reviews
$168.49 $189.95

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″  Multi Role Profile 4140 Chrome Moly Salt Bath Nitride Finish inside and out 1:7 Twist 300 AAC Blackout Chamber Threaded 5/8-24 Carbine length gas port .750″ Gas Journal

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No reviews
$13.99

Includes AR-15 ejection port, rod, and spring. Perfect for finishing a stripped upper receiver.

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No reviews
$241.99 $274.95

Perfect for building your custom .308 upper group. Comes with properly installed barrel extension. All barrel sub-assemblies are properly headspaced. Specifications: 16.1″ Medium Taper Profile 416 Stainless Steel Salt Bath Nitride Finish Inside and Out 1:10 Twist 308 WIN Chamber Threaded 5/8-24 Rifle Length Gas Port .750″ Gas Journal

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No reviews
$21.99

These new pins feature a divot and slightly longer length to aid in removal.

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No reviews
$687.49 $699.95

This 300 BLK Mk4 T Upper Group introduces CMMG’s RKM series of KeyMod free float hand guards. It features a nitrided 4140 CrMo steel barrel in a medium taper profile. Caliber: 300 Blackout Barrel: 16.1″, 1:7 twist, medium taper, 4140CM, SBN Muzzle: A2 comp., threaded 5/8-24 Hand Guard: CMMG RKM11 KeyMod hand guard Receiver: Forged 7075-T6 AL M4 type upper...

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No reviews
$259.49 $299.95

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 steel, and the carrier from 8620. Hardened extractor is S7 tool steel. Bolt: 9310 Steel, Phosphate FinishCarrier: 8620 Steel, Chrome Lined, Phosphate FinishExtractor: S7 Tool Steel, Phosphate Finish

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No reviews
$556.49 $599.95

This 22LR Mk4 T Upper Group introduces CMMG’s RKM series of KeyMod free float hand guards.  It also features a nitrided 4140 CrMo M4 profile barrel. Caliber: 22 long rifle Barrel: 16”, 1:16 twist, M4 profile, 4140 CM, SBN Muzzle: A2 comp., threaded 1/2-28 Hand Guard: CMMG RKM11 KeyMod hand guard Receiver: Forged 7075-T6 AL M4 type upper Upper Group...

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No reviews
$174.49 $199.95

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 Blast Finish 1:7 Twist 300 AAC Blackout Chamber Threaded 5/8-24 Carbine length gas port .750″ Gas Journal

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No reviews
$20.99

Stainless steel gas tube for AR15 rifle length gas system. Includes installation roll pin.

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No reviews
$201.99 $224.95

9mm AR-15 bolt assembly is complete and ready to drop into your 9mm upper. This unit is ramped for use with a standard AR or M16 hammer; no more having to purchase an additional non-standard part.