AR-15 Caliber Conversion Kits

The AR-15 platform offers impressive versatility, allowing you to convert it to fire different calibers using conversion kits. These kits make it easy to get in some affordable target practice or take on small game, simply by modifying your existing AR-15.

AT3 carries a variety of high-quality READ MORE

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RECOMMENDED

(91)

CMMG AR-15 .22 LR Stainless Steel Conversion Kit + One 10 Round Magazine – Bravo Series

Sale!

AT3™ 22LR 16" Barrel Kit - 16" Pencil 22LR Barrel - Dedicated 22LR BCG - 25rd Black Dog 22LR Magazine

AT3™ 22LR 16″ Barrel Kit – 16″ Pencil 22LR Barrel – Dedicated 22LR BCG – 25rd Black Dog 22LR Magazine

RECOMMENDED

(139)

CMMG AR-15 .22 LR Stainless Steel Conversion Kit + One 25 Round Magazine – Bravo Series

AR-15 Caliber Conversion Kits

(30)

CMMG AR-15 .22 LR Stainless Steel Conversion Kit + Three 25 Round Magazines – Bravo Series

RECOMMENDED

(21)

CMMG AR-15 .22 LR Stainless Steel Conversion Kit + Three 10 Round Magazines – Bravo Series

CMMG .22LR 25 Round Conversion Magazine for AR-15 - New Bolt Hold Open Follower

(3)

CMMG ARC-22 Magazine .22 LR AR-15 Magazine – 25 Round

Sale!

AT3™ 16″ .22LR Complete Assembled Upper with BCG and Charging Handle

CMMG Gen 2 9mm 10 Round AR-15 Magazine

(1)

CMMG Gen II 9mm Conversion AR-15 Magazine – 10 Round

22LR Charging Handle for CMMG Kits

(14)

Anti-Jam AR-15 Charging Handle for CMMG .22 LR Conversion Kits – (Optional)

CMMG .22LR AR15 Barrel and Bolt Conversion Kit

(1)

CMMG .22LR AR-15 Barrel and Bolt Conversion Kit – Multiple Lengths

CMMG .22LR 10 Round Conversion Magazine for AR-15 - New Bolt Hold Open Follower

CMMG ARC-22 .22LR AR-15 Magazine – 10 Round

CMMG 22LR Forward Assist Adapter Kit - 22AR Conversion

(1)

CMMG Forward Assist Adapter for .22LR Conversion Kits

Sale!

AT3™ 22LR 4.5" Barrel Kit - 4.5" Tapered 22LR Barrel - Dedicated 22LR BCG - 25rd Black Dog 22LR Magazine

AT3™ 22LR 4.5″ Barrel Kit – 4.5″ Tapered 22LR Barrel – Dedicated 22LR BCG – 25rd Black Dog 22LR Magazine

Sale!

AT3™ 22LR 9" Barrel Kit - 9" Tapered 22LR Barrel - Dedicated 22LR BCG - 25rd Black Dog 22LR Magazine

AT3™ 22LR 9″ Barrel Kit – 9″ Tapered 22LR Barrel – Dedicated 22LR BCG – 25rd Black Dog 22LR Magazine

CMMG Zeroed Picatinny End Cap for Bufferless AR-15

(1)

CMMG Zeroed Picatinny End Cap for .22LR AR-15

CMMG 16.1 Inch MKGS Barrel & Radial Delayed BCG Kit for AR15 - 9MM - AT3 Tactical

(1)

CMMG MKGS AR-9 Barrel – 16.1″ – 9MM – Radial Delayed BCG Kit

RECOMMENDED

Stern Defense Magazine Conversion Block - for M&P, P320/P250, 9mm, & .40 S&W Magazines

Stern Defense Magazine Conversion Block – for M&P, P320/P250, 9mm, & .40 S&W Magazines

CMMG .22 LR Magazine Speed Loader

(2)

CMMG .22 LR Magazine Speed Loader

RECOMMENDED

Stern Defense Magazine Conversion Block - for Glock 9mm & .40 S&W Magazines

Stern Defense Magazine Conversion Block – for Glock 9mm & .40 S&W Magazines

The AR-15 platform offers impressive versatility, allowing you to convert it to fire different calibers using conversion kits. These kits make it easy to get in some affordable target practice or take on small game, simply by modifying your existing AR-15.

AT3 carries a variety of high-quality .22 LR conversion options to transform your AR. Convert your rifle to this economical rimfire round and enjoy plinking at the range or hunting small critters, all while taking advantage of your familiar AR platform.