This spring only fits RIA 3.10 pistols that are GEN3.
Gen3 pistols are serialized anything above serial number RIA2259511.
1911 - 3.10 - Recoil Spring (Outer)
**Proper gunsmith fitting required for accurate fit & safe function.
PLEASE NOTE: If you purchase this item by mistake and would like to return it, We will do so gladly but will charge you a 25% restocking fee. You will also have to pay shipping back to us. Thank you and we hope this ends some of the confusion.
- 1911 Part