Product Description
MPIMAG245BLK The MBUS (Magpul Back-Up Sight) is a low-cost color injection molded folding back-up sight. The MBUS Front Sight is adjustable for elevation and fits all mil-spec 1913 Picatinny rail equipped weapons but is specifically tailored to the .223 Rem platform. NOTE: Cannot be mounted to a railed gas block due to excess heat issues. Front MBUS must be mounted to a railed fore end on the same plane as the receiver rail. Made in USA. Impact resistant polymer construction provides light weight and resists operational abuse Spring-loaded flip up sight easily activated from either side or by pressing the top Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact etc. Clamps to any standard mil-spec 1913 Picatinny railed hand guard and provides the same height-over-bore as standard A2 irons
Product Details
- Amazon Sales Rank: #6946 in Sports & Outdoors
- Brand: Magpul Industries
- Model: MAG247-BLK
Features
- Firearm Accessories
- Sights/Lasers
Customer Reviews
Most helpful customer reviews
12 of 13 people found the following review helpful.
By Charlie
Magpul is one of the leading OEMs for polymer firearm accessories. The MBUS sights are very well made and fit well on all Weaver and Picatinny rails. The spring action is smooth and easy to manipulate. The sight picture is crisp and sharp. The sight adjustments are a bit stiff and you lose rear elevation adjustments. These are designed strictly as inexpensive backup sights.
The front sight is not to be installed on gas blocks according to Magpul. I am not sure why they chose to use low temperature/low grade polymer for the front sight. There are many common nylon plastics that are frequently used in automotive engines that easily withstand 250-300F without melting or smoking.
Pros: Affordable, easy to use, gets the job done without adding mass to the weapon
Con: Can't be used on gas blocks due to the plastic melting
Overall: 4/5
8 of 8 people found the following review helpful.
By Canyon Man
I ordered this and the rear Magppul MBUS sight as a backup sighting system for my M&P 15. The sight is fairly rugged for being made out of polymer (a fancy way of saying plastic), and gives a good sight picture. It stays snug on the rail with no shift during recoil at all and flips up and locks in place securely. The one issue with this sight is being made out of polymer, it tells you not to mount it on the rail over the gas block at the front of the rifle. This is a problem because you either have to mount the front sight on the receiver rail which makes for a too short sight radius or you need a quad rail forend so you can mount the sight on the far end of the forend which gives a perfectly adequate sight radius. Since I already had a quad rail on my rifle, it wasn't an issue and the product merits five stars accordingly. However, if you have the standard forend, this might not be the front sight for you- I doubt the gas block would get hot enough to melt the sight but I wouldn't want to chance it. Magpul has gained a reputation for quality and this sight does nothing to lessen that perception.
5 of 5 people found the following review helpful.
By J. W. Mullins
This is the new and long awaited Magpul Back up Iron Sight (BUIS). These are made from the same polymer as Magpuls other items like the PMAGs. Meaning it is about as tough as you can get. These is spring loaded, mounts solid and give a good sight pictures. The flip up has some serious strength behind it so keep that in mind so as to not catch a finger. The sight uses a standard AR post and comes with a roll pin to lock it in once sighted in properly. They are a bit larger but very hard to beat quality wise at this price point.
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