February 24, 2021 In AR-15

What Buffer Size Should I Use for AR-15?

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The buffer is among the most significant parts of the AR-15 as a semi-automatic firearm. It plays a significant role in pushing back the Bolt Carrier Group (BCG) into the receiver to chamber a new round.  Secondly, it’s responsible for controlling and reducing the recoil of an AR-15.

What buffer size should I use for an AR-15? It’s a frequent question asked by most beginners building AR-15s. AR-15 s are of various configurations, i.e., pistol, rifle, and carbine. Therefore, their buffers are of different sizes. This article is a builder’s guide to AR-15 buffers.

What determines the buffer you should use?

As mentioned above, AR-15s are designed with different configurations.

The key elements determining the buffer you should use are your AR-15 muzzle device, caliber, gas system length, and barrel length.

Usually, there are two main sizes of AR-15 buffers. They are rifle buffers and carbine buffers. However, there are new buffers designed for particular stocks or braces.

The stock/brace of your AR-15 determines the size of your AR-15 buffer. For instance, the A2 stock uses a heavier buffer compared to the M4 style stocks.

Buffer Size Should I Use for AR-15

What buffer size should I use for AR-15?

It’s critical that your AR-15 uses the right buffer for it to function the right way. Buffers come in various weight sizes. They include carbine, H1, H2, H3, rifle, and pistol caliber buffers.

Carbine Buffer (3.0 oz.)

This is the standard buffer designed for traditional carbine-length gas systems set up for .223 Rem and the 5.56 NATO. However, they also work with mid-length systems.

H1 Buffer (3.8 oz.)

The Heavy or “H1” buffers are commonly used with a carbine and mid-length gas systems with excess recoil, too much gas, or hard running effect.

The extra weight on these buffers is what makes them a viable option to handle the above-listed issues in your AR-15.

H2 Buffer (4.6- 4.7 oz.)

This particular buffer is commonly used in ar-15 pistol variants with a 16-inch barrel. Also, they are used in mid-length gas systems.

Additionally, if your AR-15 is designed with a full-auto mode, then the H2 is a practical buffer for the task.

However, it may not work effectively with pistol gas systems build to fire subsonic 300 Blackout. The H2 is too heavy and unfriendly for carbine setups

H3 Buffer (5.0- 5.4 oz.)

The H3 buffer is among the heaviest AR-15 buffers. Therefore, it’s most suitable for heavier calibers such as .300 AAC, .458 SOCOM, 7.62×39, and the .50 Beowulf. It’s commonly used in AR-15s of 9-11 inches barrel chambering the .223 and 5.56 with a gas system.

Pistol Caliber Buffer (5-8.5 oz.)

The pistol caliber requires a larger buffer to smoothen the blowback action and still maintain reliable functioning. The ultimate solution is a pistol caliber buffer.

There are other heavy buffers of a similar category as the pistol caliber buffer. They include the XH Buffer (8.5 oz.) and HSS (6.5 oz.). The HSS buffer is mostly used to handle the over gassed effects in AR9s. The XH buffer is commonly mostly used in AR pistols chambered for the 9mm.

Final Thought

If you are determined to get the right buffer for your AR-15, then a practical will be better. Add various buffers and shoot to determine which one feels right for you. Additionally, you may seek assistance from a qualified armorer or gunsmith in picking the right buffer for your AR-15.

An appropriate buffer will surely improve the performance and functioning of your AR-15. To know about Gun sale online, visit us.

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