MI DPMS .308/7.62 NATO SS-Series One Piece Free Float Handguard - 12" LOW PROFILEHow to tell what type of DPMS LR-308 receiver you have:
The distance from the barrel’s centerline to the top of the receiver rail on a pre August 2009 DPMS LR308 model and Aero M5 is HIGH PROFILE 1.313'’. On a post August 2009 DPMS LR308 model the distance is 1.253'’ also known as LOW PROFILE. Just to make things MORE confusing, S&W MP10 created their uppers with a 3/16" Tang (commonly seen in high profile) BUT they have a 1.253" centerline distance (LOW PROFILE). Therefore S&W has a "high profile" tang measurement but don't be fooled, it does require LOW PROFILE handguard due to the barrel centerline distance.
August 2009 changed the height of the top rail on the LR308 upper receiver. To properly match your receiver height, measure the distance from the barrel's centerline to the top of the receiver rail. Aero Precision M5 uppers are DPMS High Profile pattern.
PRE August 2009 model is 1.313"
IMPORTANT: DPMS, BUSHMASTER & REMINGTON have two different height upper receivers. Please view picture of receiver comparisons to determine which receiver profile you have before purchasing.
The newer “Low Profile” upper receiver has a 1/8" wide top portion where the charging handle is installed. Low profile is also used by S&W MP10.
The older “High Profile” upper receiver has a 3/16" wide top portion where the charging handle is installed. High profile is also used by Aero M5.
Super slim 1.75 inch outside diameter, 1.5 inch inside diameter
Incredibly lightweight:
12 inch model weighs only 12.4 oz with steel barrel nut
Three included modular rail sections add 2.5 oz
Modular design, includes three additional 2.5 inch rail sections — one rail section includes an anti-rotation QD socket
High quality MIL-STD 1913 top rail, T-marked for accessory location
Constructed from 6061 aluminum, hard coat anodized for a lifetime of service
Fully dehorned for a non-abrasive, comfortable feel
Bipod Stud and Barrel Nut Wrench included
Some minor gunsmithing required
100% Made in the U.S.A. with Lifetime Warranty
