Frequently Asked Questions
Please see the videos under the FAQ tab or use the photo below to see which modifications are needed. Note that some USGI 20 round magazines which have a slight curve to them require the top tap to be left in place like a Pmag 10/20 block, but the bottom tab is removed. If in doubt test with the tab left in place first. Colt 20 round magazines require additional modifications. See our Colt 10/20 product listing for details. Note that USGI milspec green followers will need modification or replacement with antitilt followes to fit all 10 rounds. Again see the USGI 10/30 product listing for details.
| Legal Issues and Questions
CAUTION: Firearm laws are subject to frequent change and court interpretation. This summary is not intended as legal advice or restatement of law. This summary does not include all federal or local laws, ordinances or regulations. For any particular situation, a licensed local attorney must be consulted for an accurate interpretation. YOU MUST ABIDE WITH ALL LAWS: STATE, FEDERAL AND LOCAL. More info on state gun laws can be found here: http://www.nraila.org/gun-laws/state-laws.aspx
| Do I need to use epoxy? What does the law state?
This question comes down to what is considered "permanent" by California, or "readily restored" by New York law, New Jersey, and other states with this wording of the law. Most people play it safe and use epoxy, roll pins, rivets or other added measures of safety to seal the magazine floor plate closed. NJ specifies that more is needed than a temporary "block of wood" so epoxy or other additional modification is required. Epoxy is strongly recommended for use in all areas.
The state laws are listed for your convenience below. These may not be up to date with the current push for even more gun control laws against us law abiding citizens.
This means that one can manufacture non large-capacity magazines if the alterations to what would otherwise be a large-capacity magazine are permanent.
DOJ Clarification letter here:
DOJ Question and answer letter:
NY Section 265.00.23 See information on the "SAFE" Act here:
"Large capacity ammunition magazine" means a box, drum, tube or other container, which is capable of holding more than 15 rounds of ammunition to be fed continuously and directly therefrom into a semi-automatic firearm. A large capacity ammunition magazine that has been permanently altered so that it is not capable of holding more than 15 rounds of ammunition will cease to be defined as a "large capacity ammunition magazine."
An ammunition magazine, which has been temporarily blocked or modified from holding more than 15 rounds, as by a piece of wood or a pin, is still considered to be a "large capacity ammunition magazine."
The bill defines “large capacity magazine” as any firearm magazine, belt, drum, feed strip, or similar device that can hold, or can be readily restored or converted to accept, more than 10 rounds of ammunition. It excludes: 1. feeding devices permanently altered so that they cannot hold more than 10 rounds of ammunition.
Under Massachusetts law, a “large capacity feeding device” is defined as: “(i) a fixed or detachable magazine, box, drum, feed strip or similar device capable of accepting, or that can be readily converted to accept more than ten rounds of ammunition or more than five shotgun shells; or (ii) a large capacity ammunition feeding device as defined in the federal Public Safety and Recreational Firearms Use Protection Act, 18 U.S.C. section 921(a)(31) as appearing in such sect ion on September 13, 1994.” Ch. 140, § 121.
On and after July 1, 2013, it will be unlawful to possess, sell or transfer a "large capacity magazine." The definition of a "large capacity magazine" includes those magazines or any devices that are fixed, or detachable and can hold more than 15 rounds or be readily converted to hold more than fifteen rounds. The prohibition on possession of a "large capacity magazine" does not apply to a person who owned the magazine on July 1, 2013 and who maintains "continuous possession" of the magazine.
A shotgun magazine may not accept more than eight shotgun shells if it is a detachable magazine or hold more than twenty-eight inches of shotgun shells if it is a tubular magazine. A .22 caliber rimfire rifle or lever action rifle that can hold more than 15 rounds in a fixed tubular magazine is not included as a "large capacity magazine."
(c) The manufacture, possession, sale, barter, trade, gift, transfer, or acquisition of detachable ammunition magazines with a capacity in excess of ten rounds which are designed for or capable of use with a pistol is prohibited. This subsection shall not apply to magazines originally designed to accept more than ten rounds of ammunition which have been modified to accept no more than ten rounds and which are not capable of being readily restored to a capacity of more than ten rounds. §134-8 http://www.capitol.hawaii.gov/hrscurrent/vol03_ch0121-0200d/hrs0134/hrs_0134-0008.htm
What if less than 10 rounds fit in my USGI magazine?
The most common cause of this is that the spring hangs up on the point at the top of the Magblock. Unassemble the magazine and reinstall the block making sure it goes in straight and does nat catch on a loop of the spring. The base of the block should be flat and not angled when closing the floor plate. Once installed correctly this will not happen again.
The second issue may be USGI milspec followers. These need to have the spike at the bottom trimmed or be replaced with aftermarket anti-tilt followers. This upgrade to anti-tilt followers is also the best upgrades to increase magazine reliability and is highly recommended. Magpul, ACS, and C products followers work great. This photo shows how to modify the regular followers.
Be sure to leave it a little longer at first and test fit. Trim further as needed for a custom fit.
How do I modify a block to fit Pmag Gen M3 Magazines?
The only required modification to work is trimming off the bottom rear tab on the Magblock. This will allow 10 rounds but may not load with the bolt closed in some rifles. Trimming of the top of the block will allow loading on a closed bolt, but you have to be careful not to trim too much.
If you must have the ability to load on a closed bolt with Gen M3 Pmags then the following modifications can be made. You have to test them as you go and only trim enough to allow loading with the bolt closed.
Do Magblocks work with USGI Magazines and Ranger Plates?
While Magblocks work perfectly with Pmags and Ranger plates, the USGI magazines are more complicated due to the internal Magpul locking plate. They can be adapted to work by either trimming to block until 10 rounds fit using the original plate, or modifying a Pmag block and using epoxy to secure the ranger plate in place. We will show how to do both methods below. We will also start offering pre-modified blocks in our store for the second method since it is more complicated.
Method #1: Use Pmag block and leave out the Magpul locking plate.
Method #2: Modify a Pmag or USGI block to allow use WITH the Magpul Locking plate.
These will be sold as an option under the standard USGI Magblock listing. Once modified these must be used with USGI Ranger Plates or they will hold more than 10 rounds.
What is the wait time for backorders?
If a product is backordered it usually means that it is only 1-3 days away. Products that don't allow backordering either have a longer wait time, or unknown available supply from our distributors. Products that we manufacture may be marked as backordered if we have a low supply, high demand, or we have to manufactured as they are ordered and thus might not ship out as quickly. Most orders ship out within 24-48 hours. We always email if there is an expected delay.
|Why don't you use Google Checkout anymore?|
Google is anti gun from our experience. Google Checkout suspended our account on 2/5/2011 and refunded all of the customers who used it even though these orders were already shipped. All orders through them were for Magblocks only and they still suspended our account! They even forbid using advertising of firearm search terms! I recommend gun owners not support a company like this and use our secure credit card processor instead.
We now accept credit cards through our secure website. Paypal is also accepted for many items since they changed their policy to allow most items legal to purchase in California. Paypal is still not gun friendly, but we will keep them as an option for now. At least they don't consider magblocks a weapon...
We strongly recommend using our secure SSL and encrypted credit card processor gateway for transactions. We can also accept checks or money orders if requested. Checks are prefered for our wholesale customers.
|Where are these made?|
We are proud to say that all of our manufactured products are Made in the USA! We will never send jobs out of the country. This only makes our products slightly more expensive and we feel it is worth it.
|Our grey Magblocks are made of a very strong fiber reinforced urethane polymer and heat stable up to 265 degrees F! They also have a silica filler that makes sanding and cutting easier and the product lighter. The Black Pmag and USGI blocks are Acrylonitrile butadiene styrene or ABS, the same stuff that Lego's are made of. Also very strong against compressive forces and heat stable to 176 degrees F.|