Product DescriptionStrike&';s Stock Stop lets you convert a collapsible AR-platform stock into a fixed stock without drilling or pinning. This low-profile, lightweight insert fills all but one receiver extension hole to prevent the stock from being adjusted to another position. Constructed from high-strength, abrasion-resistant thermoplastic, it is designed to stay securely in place while remaining out of sight. Compatible with most aftermarket 6-position buffer tubes and Strike&';s 7-position Advanced Receiver Extensions, it installs with no modification to the buffer tube.Product Highlights Converts a collapsible AR-platform stock into a fixed stock-no drilling or pinning required Low-profile insert blocks receiver extension holes to prevent stock repositioning High-strength, abrasion-resistant thermoplastic construction for durable retention Fits aftermarket 6-position buffer tubes and Strike 7-position Advanced Receiver Extensions Lightweight design helps maintain a streamlined rifle setup Specs Brand: Strike Model: Stock Stop Type: Stock converter / stock stop Platform / Fit: AR-Platform (AR-15) Color: Black Material: Thermoplastic Overall Length: 3.48 in Width: 0.33 in Weight: 0.12 oz Manufacturer Part Number: ARSTOCKSTO UPC: 708747546859 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.