Large Selection of AR-9 and AR-40

YHM has long been a supplier of Caliber Marked upper receivers, but we soon asked ourselves "What if we want to change the caliber of that upper receiver?" For this reason, we now offer caliber marked dust covers for those who may end up changing the caliber of their top end/upper receiver,

SPECIFICATIONS
- Assemblies Include the following: Caliber Marked Dust Cover. Rod and Retaining Clip and Spring

Plug your lower receiver instead of using a buffer tube. This piece is designed to be used with self contained BCG/Buffer assembly type units in the upper. A .22 caliber BCG unit is the most common example.

Material: Billet Aluminum
Finish: Hard Coat Anodize
Feature:Q.D. Socket
Weight: 1.1oz

Stainless Steel buffer for carbine stocks. Designed with extra weight and length for 9mm. The added length helps prevent breakage of the bolt catch.

SPECIFICATIONS
- Includes a mil. spec. bumper
- Weight is 5.9 oz.

This 9mm Muzzle Brake and Compensator hybrid is designed to reduce recoil as well as muzzle rise for a quicker follow up shot. It is also available in a 5.56mm, and a .30 Cal.

SPECIFICATIONS
- Made from quality heat treated steel
- Plated with Melonite QPQ (Matte Black Finish)
- Threaded 1/2"-36
- Rated for 9mm, 7.62x39mm
- Includes Crush washer in the price
- Length:2.55"
- Weight: 4.5 Ounces

This 9mm Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero Black Nitride 9mm BCG is compatible with both lowers designated for Glock or Colt magazines. All critical parts are coated with Salt Bath Nitride (Black) which provides durability and increases both wear and corrosion resistance.

Details:
• FZ 9MM BCG is compatible with both Glock and Colt style magazines
• 8620 heat treated (same as Mil-Spec) AR Carrier
• Black Nitride Finish (Salt Bath Nitride)
• Staked carrier guide (gas key)
• 5.56 Extractor
• Chrome Firing Pin

For use with both Glock and Colt pattern lowers.

9MM Bolt Carrier Group
- Laser Engraved with ST Spider Logo
- Blow Back Design
- Glock Mag Cut
- 8620 Steel Body
- Black Nitride Finish

Weight: 15 oz

This 9mm AR Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero 9mm BCG is compatible with both lowers designated for Glock or Colt magazines. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance. Our patented Nickel Boron coating will reduce friction and improve the overall performance of your rifle.

Details:
• FZ 9MM BCG is compatible with both Glock and Colt style magazines.
• 8620 heat treated (same as Mil-Spec) AR Carrier
• EXO Nickel Boron Technology Coating •
Staked carrier guide (gas key)
• 5.56 Extractor
• Chrome Firing Pin