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Strike Industries
Overview
The Strike Industries AR Carbine Flat Wire Spring is designed specifically for AR-15 and AR-10 platforms, providing reliable performance in a carbine-length configuration. The flat wire construction enhances durability and reduces the risk of coil binding, which can improve the overall function of your firearm. This spring is often found in builds featuring a mid-length gas system and 5.56 NATO caliber, making it a solid choice for builders focused on reliability and performance in their setups.
Strike Industries AR Carbine Flat Wire Spring is the fourth most added buffer spring on GunPartPicker so far in September 2026, behind the Geissele Automatics Super 42 Rifle Length Spring, with about 6% of all buffer springs added to builds. Down from #3 in August. Builds with this buffer spring are mostly chambered in 5.56 NATO (71%, then .223 Wylde 19%), split between mid-length (56%) and carbine-length (22%) gas systems, and mostly AR-15 (84%, then AR-10 16%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 4 of the 5 retailers we track have it in stock. It dipped to $15.96 at AT3 Tactical for a stretch in August 2026, well under its usual $17.99 to $19.95, so sales do come around. Buying today, the lowest price is $21.95 at Brownells, above August's low of $15.96, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
We ranked every buffer spring by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Spring Guide →Check it against the live catalog:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Strike Industries Ar Carbine Flat Wire Spring
| Build | Parts | Total |
|---|---|---|
 | 27 | $1995.02 |
 | 26 | $1852.84 |
 | 30 | $7804.33 |
 | 24 | $949.70 |
 | 16 | $1942.17 |
 | 19 | $2804.26 |
 | 22 | $3361.72 |
 | 26 | $1737.18 |
 | 24 | $697.34 |
 | 27 | $1327.36 |
 | 27 | $1792.67 |
 | 30 | $3045.51 |
1 global rating
Top reviews
Strike Industries flat wire carbine buffer spring is a quality of life upgrade over a music wire spring. Much quieter cycle through the stock. Cycles cleanly on a 16 inch carbine. Dimensions match milspec carbine springs.
