Picture of a Yankee Hill Machine 9mm Bolt Buffer YHM-925-A

Yankee Hill Machine 9mm Bolt Buffer YHM-925-A

The Yankee Hill Machine 9mm Bolt Buffer YHM-925-A  designed for carbine AR-15 stocks is manufactured from high quality stainless steel and features extra weight and length for 9mm AR’s. The added length helps prevent breakage of the bolt catch. Includes a mil. spec. bumper. The buffer weight is 5.9 oz which places it between the 5.4 oz H3 and 6.08 oz VLTOR A5-H3 buffers.

Yankee Hill Machine has been in 9mm AR production longer than most and they know the platform well.





The Angstadt Arms 9mm AR-15 Buffer Kit provides the correct weight and size buffer for reliable cycling of your 9mm blowback AR-15. Just in case you ask: the standard rifle or carbine buffer isn’t the correct weight for an AR-15 chambered for 9mm Luger.

  • 5.4oz carbine buffer
  • Carbine buffer spring
  • Aluminum buffer spacer

A wear-resistant matte black finish on the all-steel Angstadt Arms 9mm AR-15 Buffer Kit protects it from corrosion and surface wear for a long service life.

Complete 9mm AR-15 buffer kit gives you everything you need to get your 9mm AR-15 running smoothly. It is compatible with both GLOCK® and Colt® style magazines.

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Maxim Defense 9mm AR15 Stock

Maxim Defense 9mm AR15 Stock – CQB

Maxim Defense 9mm AR15 Stock – CQB stock built for comfort and durability for real-world use. No buttons to push, just pull the stock to deploy. At its most collapsed position, this CQB stock only adds 5.35” to your AR15. At full extension, the Maxim CQB stock is the length of an extended carbine stock. And with 4 total positions you can adjust for maximum comfort and multiple scenarios. Rapid deployment, purpose driven materials, and the functionality you need, the Maxim Defense CQB Stock is simply the most thought out, versatile, and durable CQB stock on the market. Includes the 9mm specific JP Silent Captured Springs which has been

Maxim Defense 9mm AR15 Stock Specs

  • FEATURES: Extended Cheek Weld, Easily installs on mil-spec AR15 lowers, Interchangeable Buttstock Assemblies
  • WEIGHT: 18.59 oz.
  • MATERIAL: 7075 Aluminum Alloy housing for optimal performance with QD mounts
  • LENGTH: 5.375” closed 6.875” 1st position 8.375” 2nd position 10” fully extended
  • BUFFER: Standard, Heavy, and 9mm weight JP Silent Captured Springs. Standard and Heavy weight Buffer & Spring.


Built in Sling Mounts, 7075 Aluminum Housing

The Maxim PDW Stock features built in anti-rotational sling mounts on each side of the stock housing. Both the housing and the stock are made of 7075 aluminum for maximum strength to weight performance.

Length of Pull Preset & Steel Guide Rods

With the “grab and pull” operation of the Maxim Defense PDW Stock, you may want the stock to stop in the same position each time it’s deployed. Install the provided set screw and you can have consistent length of pull every time you expand the stock. 3/8” Black Nitride Steel guide rods for strength and stability.

Knurled Collapse Lever

One hand operation is possible with the Maxim collapse lever. The take down lever is knurled for positive gripping when hands are wet or wearing gloves.

Rock River Arms 9mm Lower Receiver Conversion Kit

Rock River Arms 9mm Lower Receiver Conversion Kit

Rock River Arms 9mm Lower Receiver Conversion Kit

Rock River Arms 9mm Lower Receiver Conversion Kit

Drop-In Kit Converts An AR15 Lower Receiver To Accept A Sub-Caliber 9mm Upper

  • 9MM0115 – 9mm Magwell Conversion Block
  • 9MM0107 – 9mm Buffer
  • 9MM0106 – 9mm Hammer
  • AR0072A – Carbine Recoil Spring

Brownells has wisely combined all the parts needed to get your 9mm AR15 ready to go.To utilize an A1 or A2 fixed stock a Fixed Stock to Carbine Stock Spacer is available.

One-stop, drop-in solution with the parts you need to convert a mil-spec small pin (.154″ dia.), .223 lower receiver with collapsible stock to accept a 9mm upper receiver assembly. Kit includes a replacement hammer, recoil spring, and buffer optimized to handle the reduced recoil force of the 9mm Luger round, as well as a Magwell Conversion Block that installs in your rifle’s magazine well to allow it to accept Rock River’s 25-round 9mm magazines, available separately. To use the Kit on a full-size rifle with fixed A1/A2-style buttstock, install the separately available Delrin® Spacer in buffer tube behind recoil spring.

SPECS: Hammer & Buffer – Steel, matte black oxide finish. Action Spring – High tensile strength spring steel. Magwell Conversion Block – Steel with matte black oxide finish and aluminum with matte black, hardcoat anodized finish. Fits CAR-15/M4 collapsible stock models with .154″ diameter receiver pin holes. Spacer – Machined Delrin. 2-1⁄8″ (5.4cm) long. Fits buffer tube for standard, fixed A1/A2-style AR-15/M16 buttstock. Not included in kit; must be purchased separately.

Rock River Arms 9mm Lower Receiver Conversion Kit

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