--- title: "Lantac RPS End Plate & Castle Nut" description: "Ratcheting end plate and castle nut with a mil-spec QD sling point, protected engagement surfaces, and QPQ-nitride 4140 steel construction." canonical_url: "https://www.kygunco.com/product/lantac-01-up-rps-rps-end-plate-castle-nut" meta: author: KYGUNCO "og:description": "Ratcheting end plate and castle nut with a mil-spec QD sling point, protected engagement surfaces, and QPQ-nitride 4140 steel construction." "og:image": "https://cdn.kygunco.com/assets/products/163681/thumbnail.jpg?v=1713454759" "og:image:height": "500" "og:image:width": "500" "og:title": "Lantac RPS End Plate & Castle Nut" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts) / [Lower Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/lower-parts) / LNT-01-UP-RPS ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/163681/main.jpg?v=1713454759) For illustration purposes only, this image may not be an exact representation of the product. # LANTAC RPS End Plate & Castle Nut The Lantac RPS End Plate and Castle Nut is a ratcheting retention system for securing the castle nut without staking. It includes a mil-spec QD sling attachment point, a one-piece anti-rotation plate, protected engagement surfaces, and an aggressively patterned castle nut. The components are CNC machined from 4140 steel and finished with QPQ nitride. $54.99 ** 5 interest-free payments of **$11** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Fulfilled by a partner warehouse. ** Partner Fulfilled Selling fast. Limited quantities available. Item # 163681 Style LNT-01-UP-RPS UPC 712038709113 Condition New Manufacturer [Lantac](https://www.kygunco.com/brand/lantac) Weight 2 lb ### Lantac RPS End Plate & Castle Nut The LANTAC RPS™ Ratchet Plate System removes the necessity to stake castle nuts in place after fitting. It also provides a QD Sling attachment point directly below the buffer tube. It utilizes a one piece designed ratcheted tooth and arm, machined directly into the anti rotation plate itself. The enhanced castle nut has an aggressive grip pattern and radially machined grooves that register with the spring like arm and tooth on the plate, causing the nut to be retained in place. The nut cannot vibrate loose through firing but can be removed through the use of an armorers wrench if necessary. The teeth and grooves are all internally facing so they cannot be accidentally damaged. The system offers lighter weight with additional functionality over the standard original design. ### **FEATURES** - Mil-Spec QD Sling Point - CNC Machined single pass threads. - Simple one piece ratchet locking plate. - Protected engagement surfaces that cannot be accidentally damaged when installed. - Aggressive Castle Nut grip pattern. - Precision machined from 4140 Steel and QPQ Nitride finished. Made in the USA ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Lantac ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/lantac-01-up-rps-rps-end-plate-castle-nut#webpage","@type":"WebPage","description":"Ratcheting end plate and castle nut with a mil-spec QD sling point, protected engagement surfaces, and QPQ-nitride 4140 steel construction.","name":"Lantac RPS End Plate & Castle 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