Check the listing for details. Pack of 10! .750" Shim/ Washers. Condition: New. Listed at 9.49 USD. If your forearm doesn't have the ability to "time" the position of the forearm in relationship to the gun, or shim will give you this capability. stainless steel shim fit between the barrel nut and receiver to allow the user to adjust the relationship betweenThickness: 0.032" Fits airsoft, paintball and It is just a washer, it is not a gun part. We do not sell anything for real gun by following ebay policy. Payments are accepted through Paypal. We ship through USPS First Class Mail from Oregon, west part of the country should receive in 1-3 days,middle part and east part of the country should receive in 3-6 days!NO INTERNATIONAL SHIPPING! We promise our best quality and the lowest price for our customers, if the item is not as the description in the listing page, we will issue a exchange or full refund. if the item is the same as the description, we willl charge a 15% restocking fee. We are a new seller on Ebay, all our prices are really low compare to others, because we want to earn feedbacks. Please understand our feedback will be left once after we have received feedback from buyer. Our goal is to place a profit margin of $1 ~ $3 per item and sell in volume. As such, the more you save the more we make. While the others are selling 1 item, we are selling 10 ~ 20 items due to our price reduction. Please use the "Ask Seller A Question" button. Please allow up to 24 hours for a response. Usually the buyer will get response in 6 hours. Customer Satisfaction • Please contact us right away (via eBay Messages) if you have any concerns, questions or issues about your purchase – and before you leave feedback. • If you give us the chance, we will make every effort to make it right for you! • We strive for five stars from you in feedback – and work hard to earn it. • Customer satisfaction is very important to us and our goal is to have every customer want to be a repeat customer.