CMMG
About CMMG
CMMG is an American AR-platform manufacturer based in Boonville, Missouri, producing a full line of rifles, pistols, and components built around their own engineering standards. They are perhaps best known for the Banshee — a compact AR-format pistol and short-barreled rifle series chambered in a wide variety of calibers, including pistol calibers fed by popular handgun magazines. CMMG also developed the Radial Delayed Blowback operating system, an in-house innovation designed to provide smoother cycling and reduce felt recoil in pistol-caliber AR platforms. Their manufacturing is done in-house in Missouri, and the company has grown steadily into a well-regarded full-line AR manufacturer.
Shop CMMG at Arms East
Arms East carries CMMG because this partner builds AR-platform firearms with genuine engineering behind them and offers a product line — especially the Banshee series — that fills a real demand in the market. Browse CMMG’s rifles, pistols, and parts below.
CMMG — Handguns (22)
- AR Pistols Add to cart
CMMG Banshee MK4 in .300 Blackout delivers compact, modular performance with a 12.50″ black nitride threaded barrel, EML 7″ M-LOK handguard, and Black Armor Cerakote receiver. Ships with CMMG ZEROED components and 30-round Magp
$1,493.00Low Stock - AR Pistols Add to cart
CMMG Banshee 308 Winchester semi-auto pistol delivers potent .308 Win stopping power in a modular Mk3 platform with full-length M-LOK accessory slots. Features 12.5″ 5/8×24 threaded barrel and 20rd magazine.
$1,776.00Low Stock - AR Pistols Add to cart
CMMG Banshee MK10 delivers 10MM AUTO power in a compact 8-inch pistol with threaded barrel and linear muzzle device. Built on an aluminum frame with CREAKOTE ARMOR BLACK finish, it accepts Glock-style 10MM magazines and ships with a 30-round capacity magazine.
$1,575.00Low Stock - AR Pistols Add to cart
CMMG Banshee MK4 in .300 AAC Blackout delivers tactical AR-pistol performance with a 12.5″ chrome moly barrel, Coyote Tan receiver, and quick-adjust RipBrace for versatile shooting scenarios.
$1,539.00Low Stock - AR Pistols Add to cart
CMMG Banshee MK4 300 Blackout pistol delivers compact maneuverability with a potent intermediate cartridge in a 12.5-inch platform. Features CMMG Zeroed Trigger, M-LOK handguard, and 30-round magazine.
Original price was: $1,392.00.$1,304.00Current price is: $1,304.00. SALELow Stock - AR Pistols Add to cart
CMMG Banshee MK4 5.56 NATO semi-automatic pistol with 10.5-inch barrel and included 30-round magazine, featuring a CMMG Zeroed Trigger and EML9 M-LOK handguard for reliable performance.
$1,416.00Low Stock
CMMG — AR15 Parts (21)
- AR15 Barrels Add to cart
CMMG 300 Blackout 16.1 inch barrel sub-assembly with pre-installed M4 barrel extension and factory head spacing for custom AR15 builds. Ready to assemble with all critical components properly fitted.
$202.00Low Stock - AR15 Barrels Add to cart
CMMG 300 Blackout upper assembly with 16.1 inch barrel, pre-installed M4 extension and factory headspaced for immediate AR15 integration. Purpose-built for custom builds without guesswork.
$202.00Low Stock - AR15 Barrels Add to cart
CMMG’s 350 Legend 16.1″ barrel sub-assembly features a pre-installed, head-spaced M4 extension in durable 4140CM steel with SBN Finish for your custom Mk4 build.
Original price was: $200.00.$190.00Current price is: $190.00. SALELow Stock 
CMMG 57D0476 Replacement Barrel Kit with Bolt Carrier Group, 5.7x28mm 16.10″ Threaded, Black, Radial Delayed Blowback, Fits AR-Platform
CMMGAdd to cartAR15 Barrels Add to cartCMMG 57D0476 Replacement Barrel Kit with Bolt Carrier Group, 5.7x28mm 16.10″ Threaded, Black, Radial Delayed Blowback, Fits AR-Platform
$490.00Low Stock- AR15 Bolts Add to cart
CMMG bolt assembly delivers precision-engineered durability and reliability for AR15 maintenance and upgrades. Consistent performance you can depend on over years of use.
$76.00In Stock - AR15 Build Kits Add to cart
CMMG Barrel and Bolt Group Kit 4.5inch MT 4140CM 22LR
Original price was: $293.00.$275.00Current price is: $275.00. SALEIn Stock
CMMG — AR Lower Parts (20)
- AR Braces/Stocks Add to cart
CMMG Receiver Extension Kit A1 delivers a complete buffer assembly, action spring, and fixed black synthetic stock to finish your AR-platform lower. Everything you need in one kit for reliable performance.
$93.00In Stock - AR Braces/Stocks Add to cart
CMMG RipBrace Kit delivers rapid-deployment performance with 6 customizable positions and Fastback Technology for simple straight-back extension. P3 Technology lets you preset your ideal positioning on this black synthetic brace.
$229.00Low Stock - AR Buffer System Add to cart
CMMG 55CA67D Pistol Tube Assembly converts your AR pistol’s buffer tube to a smooth-sided design while reusing existing components. Includes pistol buffer tube and ambi sling receiver end plate.
$48.00Low Stock - AR Buffer System Add to cart
CMMG AR-15 Carbine Receiver Extension Kit includes everything needed to complete your lower receiver build: 13.05 inch receiver extension, end plate, carbine buffer, and spring all spec’d to Mil-Spec 6-position standards.
$64.00In Stock - AR Lower Parts Kits Add to cart
CMMG AR-15 5.56 NATO lower parts kit delivers essential components for lower group assembly, excluding trigger guard, fire control group, and pistol grip for maximum customization flexibility.
$39.00In Stock - AR Lower Parts Kits Add to cart
CMMG Mk3 lower parts kit delivers the essential components for assembling your LR308 lower group, excluding the fire control group and pistol grip so you can customize with your preferred upgrades.
Original price was: $48.00.$44.00Current price is: $44.00. SALEIn Stock - AR Lower Parts Kits Add to cart
CMMG Lower Parts Kit 308 Winchester delivers all essential components to start your Mk3 build, compatible with CMMG Mk3 Lowers and most LR308 type lowers.
$81.00In Stock
CMMG — AR Upper Parts (20)
- AR Bolt Carrier Groups Add to cart
CMMG 22BA62F Bravo 22 LR 10rd Includes Magazine
Original price was: $188.00.$176.00Current price is: $176.00. SALEIn Stock - AR Bolt Carrier Groups Add to cart
Convert your 5.56/.223 AR platform rifle to affordable 22 LR shooting with the CMMG Bravo drop-in kit, complete with three 25-round magazines.
Original price was: $203.00.$190.00Current price is: $190.00. SALEIn Stock - AR Bolt Carrier Groups Add to cart
Transform your 5.56/.223 rifle into a .22 LR shooter with the CMMG Bravo 22 LR Stainless Bolt Carrier Group—a drop-in conversion kit with 25-round magazine included.
Original price was: $175.00.$160.00Current price is: $160.00. SALELow Stock - AR Bolt Carrier Groups Add to cart
CMMG M16 Bolt Carrier Group Semi-Auto 5.56mm/.223/.300 BLK Black
$146.00Low Stock CMMG 55BA5A4 Charging Handle Zeroed Ambidextrous 7075-T6 Aluminum for AR-15 Platform
CMMGAdd to cartAR Charging Handles Add to cartCMMG 55BA5A4 Charging Handle Zeroed Ambidextrous 7075-T6 Aluminum for AR-15 Platform
$80.00In Stock- AR Charging Handles Add to cart
CMMG AR-15 Charging Handle for .223 Rem/5.56 NATO
Original price was: $31.00.$27.00Current price is: $27.00. SALEIn Stock
CMMG — Rifles (20)
- AK Rifles Add to cart
CMMG Dissent MK47 delivers 7.62x39mm power in a bufferless, AK-magazine-fed platform with a pinned ZEROED SVD Brake that eliminates NFA paperwork while offering a side-folding stock with adjustable length of pull and cheek riser.
$2,296.00Low Stock - AR Rifles Add to cart
CMMG Dissent BR4 in 22 ARC delivers modern sporting rifle performance with a lightweight 16-inch barrel and DISSENT side charger handle for ambidextrous operation. Features MAGPUL SGA stock, EML15 M-LOK handguard, and semi-automatic capability with 10-round capacity.
$1,953.00Low Stock - AR Rifles Add to cart
CMMG Dissent BR4 in 300 Blackout delivers versatility across subsonic and supersonic loadings for self-defense, hunting, and target shooting. CA compliant with 16.10″ black nitride threaded barrel, aluminum receiver, full-length Picatinny rail, and Magpul SGA stock.
$1,953.00Low Stock - AR Rifles Add to cart
CMMG Dissent BR4 in 6.5 Grendel delivers flat-shooting medium to long-range performance built for hunters and target shooters. This 16.10″ carbine ships with two 10-round magazines.
$1,973.00Low Stock - AR Rifles Add to cart
CMMG Dissent BR4 carbine features an unthreaded EMPIRE profile barrel designed for strict regulatory compliance without sacrificing AR-platform reliability. Ships with two 10-round Magpul PMags and CMMG’s proprietary Zeroed trigger.
$1,883.00In Stock - AR Rifles Add to cart
CMMG Dissent MK4 in 22 ARC delivers extended-range .243/.308 Win performance in a lighter, AR15-platform package with an adjustable gas block for tuned reliability. The 16.1 inch rifle features a side-folding stock with adjustable length of pull and cheek riser, forward non-reciproc
$1,776.00Low Stock
CMMG — Magazines (10)
- AR Magazines Add to cart
CMMG 350 Legend 20-round replacement magazine delivers reliable feeding for your CMMG AR platform rifle. Built by the pioneering AR manufacturer since 2002, this magazine offers dependable capacity and performance.
$33.00In Stock - AR Magazines Add to cart
CMMG 4.6x30mm magazine delivers 40-round capacity in a compact polymer design built specifically for 4.6x30mm centerfire pistols. The sleek black finish and space-efficient profile make it ideal for shooters demanding high round count without bulk.
$30.00In Stock - AR Magazines Add to cart
CMMG’s advanced polymer construction and anti-tilt follower deliver reliable 30-round 5.56 NATO performance optimized for AR-15 platforms in harsh conditions. The Flat Dark Earth finish and raised dot stippling provide secure grip and modern aesthetics.
$16.00In Stock - AR Magazines Add to cart
CMMG Gen II 9mm magazine delivers 10-round capacity designed specifically for CMMG Radial Delayed Blowback uppers on AR15 lower receivers, with exterior dimensions compatible with standard 5.56 mag pouches.
$29.00In Stock - AR Magazines Add to cart
CMMG Gen2 9mm magazine delivers 33-round capacity for your Mk4/AR15 lower with CMMG 9mm Radial Delayed Blowback upper, fitting standard AR15 mag pouches. An upgrade from the 30-round Gen 1 design.
$29.00In Stock - AR Magazines Add to cart
CMMG factory-standard polymer magazine engineered for reliable 22LR feeding in CMMG AR conversions. 10-round capacity.
Original price was: $25.00.$23.00Current price is: $23.00. SALELow Stock - AR Magazines Add to cart
CMMG AR-15 .350 Legend 5-round magazine in black, engineered for reliable feeding in your modern sporting rifle.
$25.00In Stock - AR Magazines Add to cart
CMMG Conversion 22 LR magazine delivers reliable performance with proven design and 10-round capacity, compatible with .22LR conversion kits and CMMG Mk4 or mil-spec AR15 lower receivers.
$22.00In Stock
CMMG — Class 3 Firearms, NFA & Destructive Devices (5)
- Class 3 Parts & Accessories Add to cart
CMMG Defcan Direct Thread Adapter delivers seamless suppressor compatibility with its ½-28″ muzzle thread connection to 1.375-24″ HUB pattern suppressors. This black adapter provides reliable direct-thread mounting for enhanced firearm versatility.
Original price was: $93.00.$75.00Current price is: $75.00. SALELow Stock - Class 3 Parts & Accessories Add to cart
CMMG Zeroed Direct Thread Hub Mount (1/2-28) delivers repeatable suppressor alignment with 17-4 stainless steel construction and requires only standard tools for installation and removal. Precision-machined for industry standard HUB mount suppressors, it eliminates extra components for a clean, compact setup.
Original price was: $81.00.$76.00Current price is: $76.00. SALEIn Stock - Class 3 Parts & Accessories Add to cart
CMMG’s Zeroed Hub Mount delivers direct-thread simplicity with reliable 5/8×24″ compatibility for any 1.375-24″ HUB pattern suppressor. This black muzzle device offers straightforward mounting engineered for maximum compatibility.
Original price was: $81.00.$76.00Current price is: $76.00. SALEIn Stock - Silencers & Suppressed Firearms Add to cart
CMMG Defcan Direct Thread Adapter mounts suppressors with 1.375-24″ HUB pattern thread directly to ½-28″ muzzle threads. Quick-attach design accepts any compatible silencer.
Original price was: $93.00.$75.00Current price is: $75.00. SALELow Stock
CMMG — Gun Parts (3)
- AR Lower Parts Add to cart
CMMG Zeroed Lower Parts Kit for AR-15
Original price was: $117.00.$109.00Current price is: $109.00. SALEIn Stock - Gun Parts Kits Add to cart
CMMG 22 ARC Forward Assist Adapter Kit reliably chambers rounds in your 22 ARC conversion with durable glass-filled nylon construction designed for AR-15 platforms.
$16.00Low Stock - Other Gun Accessories & Parts Add to cart
CMMG Revo KeyMod 5 Slot Accessory Rail lets you mount non-KeyMod accessories to standard KeyMod hand guards, machined from 6061 T6 aluminum for durability on AR-15 platforms.
$19.00In Stock
CMMG — Ammunition (2)
CMMG Banshee MKG Fixed Ejector Handgun 45 Auto 13rd Magazine 8″ Barrel RipBrace Midnight Bronze
CMMGAdd to cartAmmunition Add to cartCMMG Banshee MKG Fixed Ejector Handgun 45 Auto 13rd Magazine 8″ Barrel RipBrace Midnight Bronze
$1,725.00Low Stock- Ammunition Add to cart
CMMG Dissent Mk4 5.56 NATO semi-auto rifle features a reversible side charger and ZEROED Drop-In Single Stage trigger for ambidextrous operation. Built on the Br4 platform with a 16.1-inch 4140CM barrel, Cerakote finish, and includes two Magpul
$1,973.00Low Stock
CMMG — AR10 Parts (1)
- AR10 Bolts Add to cart
CMMG MK3 308 Winchester bolt carrier group features a durable steel construction with black phosphate finish and chrome-lined carrier for reliable AR10 performance.
Original price was: $293.00.$271.00Current price is: $271.00. SALELow Stock
CMMG — Food and Survival (1)
- Food and Survival Add to cart
CMMG Tactical Bacon delivers 70-80 ready-to-eat slices per 12-ounce can with zero prep required. Perfect as a complete meal solution or standalone protein for any mission.
$39.00In Stock
CMMG — Scopes, Sights & Optics (1)
- Gun Sights Add to cart
CMMG F marked front sight base assembly for .750″ gas journals, complete with front sight post and sling loop. Professional gunsmith installation required.
Original price was: $56.00.$53.00Current price is: $53.00. SALEIn Stock
