Description
SKU: 3005 - 006
The NBS Slick Side Billet Upper Receiver is a quality, American made billet upper featuring a unique design that sets it apart from traditional forged upper receivers. Manufactured to exacting standards on five axis CNC machines from a solid block of aircraft grade aluminum, this stripped upper not only looks good… it is built to last.
M4 Feedramps
Compatible with mil-spec forged lower receivers and most billet lower receivers
.250 takedown / pivot pin holes
No forward assist
Designed to be used with or without a port door / dust cover (will need to remove e-clip from dust cover pin before assembly)
Weight: 7.1oz
Made in the USA
Backed by the NBS Limited Lifetime Warranty
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Comments (4)
It’s been proven over and over that the forward assist isn’t necessary. Eugene Stoner would have included it in his design if it were. If your bcg won’t go back into battery, then the lack of a forward assist should be the least of your worries.
Any traditional use case for forward assist being “necessary” typically results in a recipe for malfunctions.
BUT, I do agree with the support case for forward assist being the capability to slowly advance the charging handle and bolt when silence is needed and then using the forward assist to ensure the bolt is fully seated. I have needed to do this on occasion with my 350 legend when whitetail hunting and forgetting to chamber a round. I could see similar needs in a defensive scenario where silence is golden.
I bought one of these and the color did not match my aero lower. But nonetheless, it was a good price point. Machining marks were okay.
Kyle rhittenhouse proved that we do actually need the foreword assist.