3.5" Short Buffer System

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Micro Conversion Kits

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AR Build Kits

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Micro
Conversion
Kits

Full Rapide line up, how could you choose just one?

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Anodized Parts

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Skeletonized Parts

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MCK Accessories

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BEST SELLING ACCESSORIES

AR-15 5.56 NATO 5'' MICRO PISTOL KIT - FORGED UPPER WITH 4'' COMBAT M-LOK HANDGUARD C CUT - CERAKOTE SPLATTER - PINK - GRAY - RBG - RED

MSRP: $619.99

$520.99

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AR-15 Short Buffer Tube System - Ambi Charging Handle Combo - Anodized Colors

MSRP: $120.99

$89.99

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5" 5.56 NATO UPPER ASSEMBLY (BUILT)

MSRP: $335.99

Was: $325.99

Now: $289.99

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TAURUS G2C/G3/G3C/G3X/G3XL/PT111G2 MODELS | MICRO CONVERSION KIT

MSRP: $299.99 - $399.99

$265.99 - $365.99

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AR PARTS
AND
ACCESSORIES

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Low Cost AR-15 Parts

If you’re looking for Low cost AR-15 Parts and Kits, you’ve come to the right place. We are constantly doing promotions and we also try to keep our deals section stocked up with excellent deals on the AR-15 build parts you’re looking for.

Recent Blogs

Setting Up and Sighting-in a CAA Micro Conversion Kit Read More

3 AR Parts to Upgrade During Your Next Build Read More

How to Make Your AR Pistol Even Shorter Read More

About FAB Defense KPOS Micro RONI Amplifiers Read More

Welcome to MCS! The builder’s choice for Deals on AR-15 Parts, Micro Conversion Kits, Accessories and more. All competitively priced and backed by outstanding customer service.

Micro
Conversion
Kits

Full Rapide line up, how could you choose just one?

Anodized Parts

Skeletonized Parts

MCK Accessories

BEST SELLING ACCESSORIES

Featured Products

AR-15 5.56 NATO 5'' MICRO PISTOL KIT - FORGED UPPER WITH 4'' COMBAT M-LOK HANDGUARD C CUT - CERAKOTE SPLATTER - PINK - GRAY - RBG - RED

AR-15 Short Buffer Tube System - Ambi Charging Handle Combo - Anodized Colors

5" 5.56 NATO UPPER ASSEMBLY (BUILT)

TAURUS G2C/G3/G3C/G3X/G3XL/PT111G2 MODELS | MICRO CONVERSION KIT

AR PARTS
AND
ACCESSORIES

Low Cost AR-15 Parts

If you’re looking for Low cost AR-15 Parts and Kits, you’ve come to the right place. We are constantly doing promotions and we also try to keep our deals section stocked up with excellent deals on the AR-15 build parts you’re looking for.

Recent Blogs

Welcome to MCS! The builder’s choice for Deals on AR-15 Parts, Micro Conversion Kits, Accessories and more. All competitively priced and backed by outstanding customer service.

Micro Conversion Kits

Full Rapide line up, how could you choose just one?

Anodized Parts

Skeletonized Parts

MCK Accessories

BEST SELLING ACCESSORIES

Featured Products

AR-15 5.56 NATO 5'' MICRO PISTOL KIT - FORGED UPPER WITH 4'' COMBAT M-LOK HANDGUARD C CUT - CERAKOTE SPLATTER - PINK - GRAY - RBG - RED

AR-15 Short Buffer Tube System - Ambi Charging Handle Combo - Anodized Colors

5" 5.56 NATO UPPER ASSEMBLY (BUILT)

TAURUS G2C/G3/G3C/G3X/G3XL/PT111G2 MODELS | MICRO CONVERSION KIT

AR PARTS AND ACCESSORIES

Low Cost AR-15 Parts

If you’re looking for Low cost AR-15 Parts and Kits, you’ve come to the right place. We are constantly doing promotions and we also try to keep our deals section stocked up with excellent deals on the AR-15 build parts you’re looking for.

Recent Blogs

Micro
Conversion
Kits

AR PARTS
AND
ACCESSORIES