Noticeably longer springs than standard type, makes for very tight bolt fit.
I had a blown primer that caused my AR to have really weak extraction with an ejection pattern that was pushing cases very weakly at 1 o'clock. After inspecting the BCG, the extractor spring was smashed flat and I could barely move the extractor. After installing the kit my rifle is back up and running with a strong ejection pattern at 3 o'clock. BCM had good shipping time to me as well. No complaints.
Very fast shipping. The new springs are visible larger and much stronger.
Quality
I put these on all of my rifles as soon as I get them.
Did the upgrade and am very pleased.. Shot 200 rounds today and a marked improvement. This product should be standard on all extractors.
Excellent products and fast shipping!
I ordered the 3 pack kit and I upgraded my AR and AR pistol extractors, definitely a must for shorter barreled firearms but decide to do this on my 16" AR as well. Noticed a considerable change on the use of steel ammo after this upgrade (used steel to test the reliability of this upgrade) I has zero issues with over 300 rds. Perfect product!
These are great to tune up your BCG.