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Fostech Ultra-Light Castle Nut
Make your next build LITE by using a Fostech Ultra-Light Castle Nut. Fostech machined these AR15 Lower Parts from their proprietary lightweight material. Swapping in this Fostech 2505 Lightweight Castle Nut will reduce your build by 0.34oz compared to a standard castle nut. Save weight and keep the strength with the Fostech Ultra-Light Castle Nut.
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Echo ARII Caliber Conversion Hammer Spring
The Hammer Spring for the Echo ARII Trigger is designed .223/5.56. The Caliber Conversion Hammer spring is an upgraded Hammer Spring to achieve consistency for shooting 7.62 x 39.
You should be able to shoot steel or brass case with your Echo ARII Trigger; both work great with the installation of the Caliber Conversion Hammer Spring.
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Magpul PMAG Magazine MOE .223 Rem / 5.56 NATO / .300BLK 30rd
The PMAG 30 AR/M4 GEN M2 MOE is a 30-round 5.56×45 NATO (.223 Remington) AR15/M4 compatible magazine that offers a cost-competitive upgrade from the aluminum USGI. It features an impact-resistant polymer construction, easy to disassemble design with a flared floorplate for positive magazine extraction, resilient stainless steel spring for corrosion resistance, and an anti-tilt, self-lubricating follower for increased reliability.
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.22 LR Extra Power Recoil Spring
The .22 LR Extra Power Recoil Spring helps the .22 action with a sear trip kit to overcome the spring tension on the Trigger Lock.
Check our selection of .22 Caliber Conversion Parts!
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Extended Trigger Pins for LITE Lowers
Sold only as a set of 2 pins
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FosTecH Stripped Carrier with Staked Gas Key (Black Nitride)
This is a standard full-auto M16 cut bolt carrier. It is designed to function with the Echo AR-II and the Echo Sport.
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Faxon Ultra Light 14.5″ Rifled Barrel: with 2″ Permanently attached Slim 3 Port Brake, 5.56 NATO, 4150, Nitride
Our pencil barrels are the lightest in the industry. Don’t take just our word for it, major companies like Robar, 2A Armament, and others choose Faxon pencils for their ideal balance of weight and performance. We’ve taken them a step further, adding in our patent-pending permanently attached SLIM muzzle devices. Shooters can choose from a 3 port muzzle device or …
AR-15 Accessories
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