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Expo Arms
Overview
The Expo Arms AR-15 Rifle Buffer weighs 5.4 ounces and is specifically designed for use in AR-15 platforms. This buffer type is critical for ensuring the proper cycling of the action, especially in builds with a mid-length gas system, as it helps to manage the recoil impulse and enhances overall reliability. Commonly found in 5.56 NATO caliber setups, this buffer is a solid choice for builders looking to optimize their rifle's performance.
Based on build data
Strike Industries Flat Wire Spring for AR Carbine - AR-FWS-C
Timber Creek Enforcer AR Pistol Grip, Black - E ARPG BLK
Sprinco Usa M16 Rifle Cs Buffer Spring Stand-Alone
Buffer Spring
Timber Creek Outdoors Ambidextrous Safety Selector - Black
Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension
Strike Industries Cobra Billet Aluminum Trigger Guard - Red
Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Strike Industries Flat Wire Spring for AR Carbine - AR-FWS-C | 5 | |
| Timber Creek Enforcer AR Pistol Grip, Black - E ARPG BLK | 4 | |
| Sprinco Usa M16 Rifle Cs Buffer Spring Stand-Alone | Buffer Spring | 4 |
| Timber Creek Outdoors Ambidextrous Safety Selector - Black | 4 | |
| Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension | 3 | |
| Strike Industries Cobra Billet Aluminum Trigger Guard - Red | 3 |
| Platform | Percentage |
|---|---|
| AR-15 | 81.8% |
| AR-10 | 9.1% |
| AR-9 | 9.1% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 70% |
| .223 Wylde | 20% |
| .458 SOCOM | 10% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 40% |
| Rifle | 30% |
| Carbine | 20% |
| Pistol | 10% |
Builds in the community that include the Expo Arms Ar-15 Rifle Buffer - 5.4 Oz
| Build | Parts | Total |
|---|---|---|
 | 27 | $2113.20 |
 | 24 | $939.64 |
 | 16 | $626.37 |
 | 25 | $775.14 |
 | 24 | $2654.92 |
2 global ratings
Running this 5.4oz rifle buffer in a 20-inch 5.56 build with a mid-length gas system. It's doing its job reliably, cycling is smooth and consistent. Recoil impulse feels well managed. My only small gripe is it came with a couple tiny cosmetic dings on the finish, nothing major but noticeable if you're particular. Still a solid performer for the price.
Expos rifle length buffer at 5.4 oz is the right weight for an A2 stock setup running a 20 inch barrel. Inside weights dont rattle. Body is matte phosphate steel which wont show wear like aluminum. Fits any rifle length buffer tube cleanly.
