The EGW premium Mainspring housing is expertly crafted to enhance the performance and durability of your 1911 government and Commander frames. Engineered with precision, this housing features strategically designed serrations that optimize weight distribution and provide superior grip traction, ensuring a secure and comfortable handling experience. Constructed from fully-machined bar stock, this mainspring housing offers a robust and reliable upgrade from standard plastic housings, promising longevity and resilience under demanding conditions. While pins and springs are not included, you have the flexibility to utilize components from your existing mainspring housing or acquire new ones from our comprehensive selection. Please note that this premium component is not compatible with STI's or short grip frames. Trust in EGW's commitment to quality and innovation with this meticulously designed mainspring housing, tailored to meet the needs of discerning firearm enthusiasts seeking enhanced performance and reliability.