BEV Block provides vise block engagement for AR15/M4 upper and lower receivers
Engages lug recesses in barrel extension to secure upper receiver, and full-length steel support shank provides internal support
O-ring post engages bolt carrier for additional support and included security pin maintains proper position for upper receiver
Bundle & saveDiscount applied automatically at checkout
Mix and match across the range: 2 items save 5%, 3 save 10%, 4 or more save 15% on your whole basket.
In stock · ready to order
£5 tracked UK deliveryOrder today — estimated delivery 7–10 business daysOrdered in from the manufacturer for you · Royal Mail Tracked 24 · tracking emailed on dispatchDelivery details
Fitment
Check the platform named in the title to confirm fit before ordering.
Genuine manufacturer stockOrdered in from the brand for your order — never grey imports or copies.
30-day returnsChange your mind within 30 days of delivery, unused and boxed.
Secure checkoutEncrypted payment through Shopify and PayPal.
UK-based supportEmail us with your make and model — we reply within one working day.
Secure payment
Product details
Everything you need to know.
Description
The Barrel Extension Vice (BEV) Block fits into common bench vises and provides secure interface for both AR15 upper and lower receivers for maintenance, builds and other work. The top end of the BEV engages the inside of the barrel extension with steel lugs and a support shank to prevent flexing or twisting.
Vise block for AR15/M4 uppers and lowers.
Flipped over, the BEV block engages an AR15/M4 magazine well to secure a lower receiver for work or maintenance. Made in the USA.
Why shooters choose the BEV Block AR15/M4
BEV Block provides vise block engagement for AR15/M4 upper and lower receivers
Engages lug recesses in barrel extension to secure upper receiver, and full-length steel support shank provides internal support
O-ring post engages bolt carrier for additional support and included security pin maintains proper position for upper receiver
Bottom end of BEV Block accepts standard AR15/M4 magazine wells to secure a lower in a vise
All engagement surfaces beyond barrel extension lugs are made of non-marring durable Magpul polymer for long service life
What the BEV Block AR15/M4 fits
Check the platform named in the title to confirm fit before ordering.
Specifications
Brand
Magpul
Product
BEV Block AR15/M4
Type
Armourer Tool
Platform
AR-15
Colour
Black
Material
Polymer
Origin
Made in USA
MPN
MAG536
Genuine Magpul, ready to fit. Order the Magpul BEV Block AR15/M4 today — ordered in from the manufacturer for you and sent by Royal Mail Tracked 24, with delivery in 7–10 business days.
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
Returns
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
Yes. It is ordered in from Magpul through our US supplier, not a copy or a clone.
How is it delivered?
It is ordered in from the manufacturer for you and sent by Royal Mail Tracked 24, with delivery in 7–10 business days and £5 tracked UK delivery.
How long does delivery take?
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Is this a genuine manufacturer product?
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Will it fit my rifle, shotgun or pistol?
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Do you offer multi-buy discounts?
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Can I return it if it is not right?
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
Why Onyx Armaments
Bought once. Bought right.
Genuine manufacturer stockOrdered in from the brand for your order — never grey imports or copies.
£5 tracked UK deliveryRoyal Mail Tracked 24, 7–10 business days, tracking emailed on dispatch.
30-day returnsChange your mind within 30 days of delivery, unused and boxed.
Real answers, fastUnsure about fit? Email support@onyxarmaments.co.uk and we check with the maker.