Check the listing for details. ASG Airsoft Ultimate M115 Upgrade Spring - Yellow. Condition: New. Listed at 13.00 USD. ASG Airsoft Ultimate M115 Upgrade Spring - Yellow These springs are designed from the start to deliver the best output while keeping their coil strength, consistency, and quality. Ultimate Mil-Spec AEG springs are manufactured out of the best steel (SiCr) available for springs, which is the same steel used for real firearm buffer springs. These springs are pre-compressed, which greatly reduces power loss from initial shrinkage. The Mil-Spec springs are also color coded for better identifying them when switching out the spring for different skirmishes. With the closed and ground ends, the spring remains in place during use to prevent a reduction in ROF due to bending. All of the ASG springs are progressively coiled, which provides a soft start that eases stress on both mechanical and electrical parts. The black zinc plating also provides corrosion resistance without impairing spring performance. ASG's full specification control provides the same specification for every spring produced. Note: Each strength of spring will have a different length and the coil spacing will differ as well. This is completely intentional, and this design is what allows the springs to be as consistent as they are. For example: the M125 spring is actually the shortest of the 5 springs with the tightest spacing, while the M115 is the longest with the loosest spacing. Specs: M115 Yellow Material: Oil tempered SiCr-alloyed spring wire Material code: EN10270-2 Dia. rod: 1.3mm De (dia. ext): 14 R (springrate) N/mm: 0,519 Total coils: 29 Mass: 12g LO (free state): 170mm Lc (BLOC): 38mm L1: 100 F1 N: 47 L2: 55 F2N: 70 Coiling Type: Progressive End Coiling: Closed and ground Free length condition: Pre-compressed Anti-corrosion protection: Black zinc plating Color code: Yellow ASG Airsoft Ultimate M115 Upgrade Spring - Yellow These springs are designed from the start to deliver the best output while keeping their coil strength, consistency, and quality. Ultimate Mil-Spec AEG springs are manufactured out of the best steel (SiCr) available for springs, which is the same steel uséd for real firearm buffer springs. These springs are pre-compressed, which greatly reduces power loss from initial shrinkage. The Mil-Spec springs are also color coded for better identifying them when switching out the spring for different skirmishes. With the closed and ground ends, the spring remains in place during use to prevent a reduction in ROF due to bending. All of the ASG springs are progressively coiled, which provides a soft start that eases stress on both mechanical and electrical parts. The black zinc plating also provides corrosion resistance without impairing spring performance. ASG's full specification control provides the same specification for every spring produced. Note: Each strength of spring will have a different length and the coil spacing will differ as well. This is completely intentional, and this design is what allows the springs to be as consistent as they are. For example: the M125 spring is actually the shortest of the 5 springs with the tightest spacing, while the M115 is the longest with the loosest spacing. Specs: M115 Yellow Material: Oil tempered SiCr-alloyed spring wire Material code: EN10270-2 Dia. rod: 1.3mm De (dia. ext): 14 R (springrate) N/mm: 0,519 Total coils: 29 Mass: 12g LO (free state): 170mm Lc (BLOC): 38mm L1: 100 F1 N: 47 L2: 55 F2N: 70 Coiling Type: Progressive End Coiling: Closed and ground Free length condition: Pre-compressed Anti-corrosion protection: Black zinc plating Color code: Yellow &times Buy now and save! Shipping info Click the Shipping & Payments tab above the listing description for more info Click the Shipping & Payments tab above the listing description for more info! Additional delivery notes PICK UP OPTION Sorry, our items are NOT available for pick-up. PAYMENT Immediate payment is required upon selecting "Buy It Now" or upon checking out through the cart. We accept payment via U.S. PayPal accounts and all Major Credit Cards, Debit Cards & Google Pay. 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We accept payment via U.S. PayPal accounts and all Major Credit Cards, Debit Cards & Google Pay. We are legally required to collect sales tax in those states and localities where we maintain a physical presence (nexus). The applicable amount of sales tax charged to an order will be calculated based on the shipment destination's state and local sales tax laws. Thank you for shopping with us on eBay! Returns Returns are accepted Items must be returned within 30 days of the auction ending Buyer will pay for return shipping. eBay integration by