Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: I have a few 42 round mags, a good 2 1/2" longer than the 30 round, for my AR-15.  If I remove the gun rest, will there still be enough room for them?
Document: Works good to zero any gun, both hand-gun and rifle. Used it to zero my AR-15. Would highly recommend this item.
Then I filled it with about 10 pounds of 1/2 inch lead balls I had leftover from black powder production. I filled the hollow cavities on the base and the front post with the lead. Now it is rock solid. Now, even shooting military grade hot ammo in my M16 it easily holds still for follow up shots without any need to readjust anything. It's a good rest for the money, once you get all the correct parts.
I just received this and after putting it together carefully with 1/2 inch lead shot (inside hollow parts) to weigh it down I went to put the final parts together and realized the round adjustment dial in the front of the unit on the post does not in any way fit onto the threaded post. It appears to be a slightly different design than the one in the picture and is clearly MUCH too small to thread on.
You can add weight in 2 separate places. I didn't use any the first time. Barely moves with my .223 I was sighting in. Now I just put an ankle weight on the bottom and its nice and sturdy. Also accommodates my 30 rd mags. Easy to put together and is sturdy. Also easy to carry when I go to the range. Great purchase overall.
I like it, but it is somewhat light without added weight. I would still recommend it to others for a portable shooting rest that takes up very little room.
Gave this a 5 star  rate because it did all iwanted it to do.Used for a buchmaster ar-15 with a 30 shot clip.Used for cleaning and installing  scope,flashlight,laser sightand bi-pod.Have not used for sighting ar-15 or ruger sr9 pistol because its winter. I would reccomend this shouting rest all that want to sight in rifles or pistols.
Very pleased with this product. Rifle is very stable on the rest and it does not mar rifle at all. Stag Arms model 6 super varmiter fits well even with 30 round mag. Very well thought out and while it is plastic, it is very sturdy and does not flex around, 6 rubber feet hold it in place quite nicely. I did not buy this rest to offer any recoil reduction, a.k.a.
The best part about this rest is that you can use it with rifles equipped with 30 round magazines, probably larger if you hold the butt up off of the rear support. I did have one of the rubber feet fall off during a shooting session. I'll be putting some adhesive on all four feet before the next outing.Overall, this is a 5 star item, stable, works with rifles and pistols and seems to be well made.
As a background, I'm an avid shooter, and I just started reloading pistol ammunition. Testing loads for a pistol is best with a stable, sturdy platform. I already have a Lead Sled for my long guns for sighting my scopes/sights.This item comes completely unassembled. It takes about 15-20 minutes to put it together. You do need a Phillips #2 screwdriver. Once assembled, you can secure the wrist rest for the pistol using a knob at the bottom of the rest.
I thought I would try this not expecting to much for the price... Wow I was really surprised to see how well this little rest meet my needs. I bought  new AR with a scope, red dot and backup sights. Used this rest to sight in all three at the range. It is very steady and does move all over on the range table. Here's another neat feature... it works really well as a platform for cleaning my AR, 12 gauge and 30-6.
Answer: yes