What does dpms compatible mean

Though strikingly similar to the untrained eye, the LR and AR10 are functionally very different. Basic critical-to-function parts that are not interchangeable are as follows:. However if you need to swap some less important parts, you can swap the following between both platforms:. Without going into too much detail as this could be a whole other conversation in itself the LR is the clear and undisputed winner between these two. There are technically three but the third is relatively uncommon and is referred to as a "Slick Side" or "High Rise" receiver and is awkwardly high.

The common two are aptly named high and low profile. Simply measure the height of the tab that juts out above the charging handle. If it is larger than that, good luck finding a handguard to pair with the top of the receiver; I don't know of any.

Monstrum Tactical's handguards are designed for the top rail to line up to low profile receivers as they are by far the most common. You can find our LR hanguards here. Will Monstrum Tactical's handguards install on a high profile receiver? Rock River was also a major player in the early days, however, its LAR pattern didn't see as widespread aftermarket profusion. Today the world is awash in ARs, and unlike its little brother the AR, manufacturers have done anything but standardize.

This means there are many other patterns on the market, specialized designs that veer from what use to be the norm and are only compatible with parts from that particular company. The differences between the patterns are fine, but particularly notable on the AR lower receiver's geometry. The means, for the most part, upper receivers only play nice with their own kind. Not that this is an advisable configuration. Additionally, the gap is right around face level when the firearm is shot, not ideal if ever a case ruptured.

A not-so-obvious variance in the AR lower receiver patterns is magazine compatibility. Time was DPMS had a definitive advantage in this facet, using modern magazines based on the original waffle-pattern. Conversely, for a spell, ArmaLite turned out their own magazine stock there were a few other manufacturers based on the one used by the M This changed earlier this decade. ArmaLite introduced what it calls its Series A receivers Series B is the traditional receiver design , which are compatible with industry-standard magazines based on the waffle pattern.

Though, Series B ARs are readily available. There are a number of manufacturers who are on each team, though the DPMS perhaps has more. Following along to the internals and other aspects affiliated with the AR lower receiver, things loosen up quite a bit, given there are a number of AR parts that are compatible. But not all. Bolt catch, magazine catch, buffer, buffer spring and takedown pins are no-goes between the large and small ARs. However, the platforms can share pistol grips, buffer tube, trigger guard, safety selector and spring , magazine release button and spring , trigger guard, buttstock, hammer and trigger.

This last component — trigger — is especially nice, opening a veritable floodgate of top-shelf options. It's at home in your. That said, most trigger makers do offer options specifically designed for the larger-caliber rifle. Some shooters swear by them, citing greater durability and reliability. Forums Semi-Automatic Rifles. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser. LilGucci Sergeant of the Hide. Full Member. Oct 7, 1, Which companies are on the Armalite platforms, which ones are on DPMS, and from those two groupings, which ones are interchangeable and not proprietary?

Last edited: Nov 4,