S&W M&P 15-22 Sub-sonic Recoil Spring
$6.00
108 Customers Have Purchased This Item!
- Intended to be used with sub-sonic ammo ONLY.
- DO NOT use with standard or high velocity ammo. Receiver damage may happen.
- Do NOT use a short 10 round magazine
- Use ONLY 25 round length magazines and load ONLY 10 to 15 rounds.
- Check to make sure the bolt is in battery every time before you pull the trigger!!!!
- You must use the bolt release to chamber a round. Do NOT pull back on the charging handle and let go.
The “Ideal” round is .22LR 40 grain with a muzzle velocity of 710 FPS in our test rifles.
You may have better or worse results with other weights and speeds.
Product Description
The S&W M&P 15-22 will not cycle reliably with subsonic ammo, it must have a modified recoil spring for this. Sub-sonic Ammo is not designed to operate semi-automatics. They all need a modified spring due to their “Blow Back” recoil design. Sub-sonic ammo doesn’t produce the kinetic energy required to cycle the bolt and overcome the hammer spring. You can NOT put in a lighter hammer spring because the 22 Rimfire needs as much impact on the rim as possible.
- Intended to be used with sub-sonic ammo ONLY.
- DO NOT use with standard or high velocity ammo. Receiver damage may happen.
- Do NOT use a short 10 round magazine
- Use ONLY 25 round length magazines and load ONLY 10 to 15 rounds.
- Check to make sure the bolt is in battery every time before you pull the trigger!!!!
- You must use the bolt release to chamber a round. Do NOT pull back on the charging handle and let go.
The “Ideal” round is .22LR 40 grain with a muzzle velocity of 710 FPS in our test rifles.
You may have better or worse results with other weights and speeds.
Additional Information
| Weight | 1 oz |
|---|---|
| Dimensions | 6 × 4 × .5 in |
| Firearm Compatibility | S&W M&P 15-22 Pistol, Performance Center Smith & Wesson M&P15-22, Smith & Wesson M&P15-22 |
| Color | Orange |
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