{"id":22389,"date":"2025-11-04T03:15:06","date_gmt":"2025-11-04T03:15:06","guid":{"rendered":"https:\/\/gun-engineer.com\/?post_type=product&#038;p=22389"},"modified":"2026-02-17T11:25:59","modified_gmt":"2026-02-17T11:25:59","slug":"gun-engineer-ar-15-quad-rail-end-cap-free-float-handguard-securement-black","status":"publish","type":"product","link":"https:\/\/gun-engineer.com\/fr\/produit\/gun-engineer-ar-15-quad-rail-end-cap-free-float-handguard-securement-black\/","title":{"rendered":"Gun Engineer AR-15 Quad Rail End Cap &#8211; Free-Float Handguard Securement, Black"},"content":{"rendered":"<h3 id=\"heading-26811bff-b726-4302-8067-e54c6e62fc19--critical-handguard-stabilization-0\">Critical Handguard Stabilization<\/h3>\n<p>The Gun Engineer Quad Rail End Cap delivers essential stability for your AR-15&#8217;s free-float system by mechanically locking the handguard against the receiver interface. This precision-engineered component prevents clocking movement during rapid-fire engagements or impact scenarios, maintaining consistent accessory alignment while creating a debris-resistant barrier at the assembly boundary.<\/p>\n<p>Designed from aerospace-grade aluminum and protected by MIL-Spec hardcoat anodization, it withstands thermal expansion cycles and friction wear without compromising dimensional integrity.<\/p>\n<h4 id=\"heading-26811bff-b726-4302-8067-e54c6e62fc19--securement-features-0\">Securement Features:<\/h4>\n<ul>\n<li><strong>Rotational Lock Design<\/strong>\u00a0&#8211; Keyed interface prevents torque-induced handguard movement<\/li>\n<li><strong>Precision Mating Surfaces<\/strong>\u00a0&#8211; Machined to \u00b10.002&#8243; tolerance for zero-gap assembly<\/li>\n<li><strong>Debris Exclusion Flange<\/strong>\u00a0&#8211; Seals handguard-receiver junction against particulate intrusion<\/li>\n<li><strong>6061-T6 Aluminum Core<\/strong>\u00a0&#8211; Optimal strength-to-weight ratio without barrel harmonics effect<\/li>\n<li><strong>Thermal Expansion Compensation<\/strong>\u00a0&#8211; Radial gaps accommodate barrel heat transfer<\/li>\n<li><strong>MIL-A-8625F Anodization<\/strong>\u00a0&#8211; Type III Class 1 finish for permanent corrosion resistance<\/li>\n<\/ul>\n<h4 id=\"heading-26811bff-b726-4302-8067-e54c6e62fc19--specifications-0\">Sp\u00e9cifications<\/h4>\n<div class=\"TableWrapper-eGeEPK jRXIOF table-wrapper\">\n<table>\n<tbody>\n<tr>\n<th>Parameter<\/th>\n<th>Value<\/th>\n<\/tr>\n<tr>\n<td>Material<\/td>\n<td>6061-T6 Aluminum<\/td>\n<\/tr>\n<tr>\n<td>Finish<\/td>\n<td>Black Hardcoat Anodized<\/td>\n<\/tr>\n<tr>\n<td>Fitment<\/td>\n<td>Standard Free-Float Quad Rail Handguards<\/td>\n<\/tr>\n<tr>\n<td>Mounting Method<\/td>\n<td>Slip-Fit Compression Ring<\/td>\n<\/tr>\n<tr>\n<td>Weight<\/td>\n<td>0.6 oz (17 g)<\/td>\n<\/tr>\n<tr>\n<td>Dimensions<\/td>\n<td>1.35&#8243; OD \u00d7 0.32&#8243; H<\/td>\n<\/tr>\n<tr>\n<td>Compatibility<\/td>\n<td>AR-15 Free-Float Systems<\/td>\n<\/tr>\n<tr>\n<td>Country of Origin<\/td>\n<td>Malaysia<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"ToolbarWrapper-cgPsZ CTcSt table-toolbar\"><\/div>\n<\/div>\n<p><em>Designed in Malaysia by Gun Engineer, ensuring precision and reliability.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Critical Handguard Stabilization The Gun Engineer Quad Rail End Cap delivers essential stability for your AR-15&#8217;s free-float system by mechanically locking the handguard against the receiver interface. This precision-engineered component prevents clocking movement during rapid-fire engagements or impact scenarios, maintaining consistent accessory alignment while creating&#8230;<\/p>","protected":false},"featured_media":22390,"comment_status":"open","ping_status":"closed","template":"","meta":[],"etheme_brands":[],"product_brand":[],"product_cat":[84,68],"product_tag":[325,319,322,321,309,323,320,324],"class_list":{"0":"post-22389","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ar-15-handguards","7":"product_cat-ar-15-parts","8":"product_tag-ar15-build-kit","9":"product_tag-ar15-end-cap","10":"product_tag-ar15-handguard-parts","11":"product_tag-free-float-handguard","12":"product_tag-gun-engineer-malaysia","13":"product_tag-handguard-retention","14":"product_tag-quad-rail-end-cap","15":"product_tag-rail-securing-cap","17":"first","18":"instock","19":"shipping-taxable","20":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.4 (Yoast SEO v26.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>AR-15 Free-Float Quad Rail End Cap | Gun Engineer Malaysia<\/title>\n<meta name=\"description\" content=\"Secure your free-float quad rail handguard with this precision aluminum end cap. 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