15 Lb Recoil Spring for 5″ 1911 Models & 4.7″ P320 ModelsGun Engineer Springs are manufactured exclusively with certified aerospace specification alloys such as chrome silicon. Their springs are heat treated, shot-peened, and stress relieved after winding to enhance performance and durability. Chrome silicon springs have 10x the life of traditional music wire springs, and they hold much better tolerances during compression and cycling. This spring not only features improved materials over the stock components but will also lighten up the trigger feel from the stock 16 lb weight down to 15 lb’s. Get an Gun Engineer recoil spring to improve your firearm’s quality and trigger feel today!

• Only fits 1911 Models with a 5″ Barrel and SIG P320 Models with a 4.7″ Barrel
• Lighten the trigger feel of your firearm with this 15 lb recoil spring

Manufacturer: Ingeniero de armas
Type: Recoil Spring
Model: Aftermarket Upgrade
Gun Engineer Custom Kit: Yes
For Gun Make: 1911 & Sig Sauer
For Gun Model: 1911: Government 5″ & Clones. Sig Sauer: P320 Full Size 4.7″
Caliber: 9MM & .45 ACP
Does Not Fit: Government, Comander, P320 Compact, P320 Subcompact